Mock Test 12 — Delhi Police Constable Full Pattern (100 MCQs)
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This is a full-length practice test following the exact Delhi Police Constable written exam pattern: 25 Reasoning, 50 General Knowledge & Current Affairs, 15 Numerical Ability, and 10 Computer Knowledge questions.
Section A: Reasoning (Q1–25)
- In the analogy "Judge is to Court as Referee is to ___," the missing word is:
(a) Field (b) Whistle (c) Match (d) Team - Find the missing number in the series: 6, 18, 54, 162, ?
(a) 486 (b) 480 (c) 492 (d) 476 - Which one does not belong with the others: Wolf, Fox, Jackal, Peacock?
(a) Peacock (b) Wolf (c) Fox (d) Jackal - In a code, HOUSE is coded as IPVTF (each letter shifted one place forward). How is CASTLE coded using the same rule?
(a) DBTUMF (b) DBTUMG (c) CBTUMF (d) DBTVMF - A man walks 21 km south, then 28 km east. How far is he from his starting point?
(a) 35 km (b) 40 km (c) 45 km (d) 30 km - N is O's father. P is O's brother. How is N related to P?
(a) Father (b) Uncle (c) Grandfather (d) Brother - In the letter series K, N, R, W, ?, what is the next letter (gaps +3, +4, +5, next +6)?
(a) AC (b) AB (c) AA (d) Z - Given: C ≥ D > E ≥ F. Which of the following must be true?
(a) C ≥ F (b) F > C (c) D < F (d) E > C - In a class of 84 students, Raghav ranks 36th from the top. What is his rank from the bottom?
(a) 49th (b) 48th (c) 50th (d) 47th - If '@' denotes '+', '#' denotes '−', '%' denotes '×', and '$' denotes '÷', evaluate: 120 $ 10 % 5 @ 35 # 22.
(a) 73 (b) 71 (c) 75 (d) 69 - Fifteen people sit in a row facing north. J sits at the left end. K sits immediately to the right of J. L sits tenth to the right of K. How many people sit to the right of L?
(a) 3 (b) 4 (c) 2 (d) 5 - Statements: All wardens are custodians. Some custodians are supervisors. Conclusion: Some wardens are supervisors. Does this conclusion necessarily follow?
(a) No, it does not necessarily follow (b) Yes, it follows validly (c) Only if all custodians are wardens (d) Cannot be determined - In a code, SIGNAL is coded by each letter's position in the alphabet as 19-9-7-14-1-12. How is CIRCLE coded using the same rule?
(a) 3-9-18-3-12-5 (b) 3-9-18-3-12-4 (c) 2-9-18-3-12-5 (d) 3-8-18-3-12-5 - Find the missing number in the series: 900, 810, 729, 656.1, ?
(a) 590.49 (b) 585 (c) 595 (d) 580 - A man is facing north. He turns 90° anticlockwise, then 90° clockwise, then 180°. Which direction is he facing now?
(a) South (b) North (c) East (d) West - A is three times as old as B. Five years ago, A was four times as old as B. Find B's present age.
(a) 15 years (b) 12 years (c) 18 years (d) 10 years - Find the missing number in the series: 19, 40, 82, 166, ?
(a) 334 (b) 330 (c) 338 (d) 326 - Which of the following is not a multiple of 14: 126, 140, 150, 168?
(a) 150 (b) 126 (c) 140 (d) 168 - Thirteen colleagues sit in a row facing north. M sits at the right end. N sits immediately to the left of M. O sits ninth to the left of N. How many colleagues sit to the left of O?
(a) 2 (b) 3 (c) 1 (d) 4 - Statements: All barracks house personnel. Everything that houses personnel requires maintenance. Conclusion: All barracks require maintenance. Does this follow?
(a) Yes, it follows validly (b) No (c) Cannot be determined (d) Only partially - Find the missing number in the series: 8, 19, 41, 85, ?
(a) 173 (b) 170 (c) 176 (d) 168 - In the analogy "Architect is to Building as Composer is to ___," the missing word is:
(a) Symphony (b) Piano (c) Orchestra (d) Note - In a code, WINTER is coded as XJOUFS (each letter shifted one place forward). How is HARBOUR coded using the same rule?
(a) IBSCPVS (b) IBSCPVT (c) HBSCPVS (d) IBSDPVS - In a row of 110 people, Divya is 48th from the left. What is her position from the right?
(a) 63rd (b) 62nd (c) 64th (d) 61st - Statements: All fire extinguishers are safety equipment. No safety equipment is decorative. Conclusion: No fire extinguisher is decorative. Does this follow?
(a) Yes, it follows validly (b) No (c) Cannot be determined (d) Only partially
Section B: General Knowledge & Current Affairs (Q26–75)
- Who was the first Indian to receive the Bharat Ratna posthumously?
(a) Lal Bahadur Shastri (b) Jawaharlal Nehru (c) Sardar Patel (d) B.R. Ambedkar - Which Article of the Indian Constitution provides for the Right to Constitutional Remedies?
(a) Article 32 (b) Article 21 (c) Article 19 (d) Article 14 - Which Indian city is known as the "Cyber City" of Haryana?
(a) Gurugram (b) Faridabad (c) Panipat (d) Ambala - The First War of Indian Independence, also known as the Sepoy Mutiny, began at which garrison town?
(a) Meerut (b) Delhi (c) Kanpur (d) Lucknow - Which is the largest tiger reserve in India by core area?
(a) Nagarjunsagar-Srisailam (b) Corbett Tiger Reserve (c) Bandipur Tiger Reserve (d) Kanha Tiger Reserve - Who was the Viceroy of India who introduced the Ilbert Bill?
(a) Lord Ripon (b) Lord Curzon (c) Lord Lytton (d) Lord Dufferin - The Bhakra Nangal Dam is built on which river?
(a) Sutlej (b) Beas (c) Ravi (d) Chenab - Which is the highest gallantry award given to civilians in India?
(a) Ashoka Chakra (b) Param Vir Chakra (c) Kirti Chakra (d) Shaurya Chakra - Who was the President of the Constituent Assembly of India?
(a) Rajendra Prasad (b) B.R. Ambedkar (c) Jawaharlal Nehru (d) Sardar Patel - Which Indian state has one of the largest numbers of registered cooperative societies among Indian states?
(a) Maharashtra (b) Gujarat (c) Tamil Nadu (d) Karnataka - The Rowlatt Satyagraha was launched in response to which legislative measure?
(a) The Rowlatt Act (b) The Government of India Act (c) The Vernacular Press Act (d) The Ilbert Bill - Which is the national fish of India, notably designated by some states individually rather than at the national level?
(a) There is no officially declared national fish of India (b) Hilsa (c) Rohu (d) Mahseer - Who was the first Chief Minister of Rajasthan?
(a) Hiralal Shastri (b) Mohan Lal Sukhadia (c) Bhairon Singh Shekhawat (d) Jai Narain Vyas - Which Indian city is known as the "Aerospace Capital of India"?
(a) Bengaluru (b) Hyderabad (c) Nashik (d) Kanpur - The Battle of Diu, a naval engagement between Portugal and a combined fleet, was fought in which year?
(a) 1509 (b) 1526 (c) 1556 (d) 1600 - Which large scavenging bird found in the Himalayan region has one of the widest wingspans among Indian birds?
(a) Himalayan Griffon Vulture (b) Great Indian Bustard (c) Sarus Crane (d) Indian Peafowl - Who founded the Self-Respect Movement in Tamil Nadu?
(a) Periyar E.V. Ramasamy (b) C.N. Annadurai (c) M.G. Ramachandran (d) Karunanidhi - Which is the highest point on the Grand Trunk Road within India?
(a) The road's alignment through Punjab's plains carries no notable elevation extreme; it is largely a plains route (b) It peaks in the Himalayas (c) It peaks in the Aravallis (d) It peaks in the Vindhyas - The Government of India shifted its capital from Calcutta to Delhi in which year?
(a) 1911 (b) 1905 (c) 1919 (d) 1935 - Which Indian state celebrates the "Baisakhi" harvest festival prominently?
(a) Punjab (b) Haryana (c) Himachal Pradesh (d) Rajasthan - Who became the first Indian woman shooter to win an Olympic medal, at the 2024 Paris Olympics?
(a) Manu Bhaker (b) Heena Sidhu (c) Anjali Bhagwat (d) Karnam Malleswari - Which strait separates Australia from the Torres Strait Islands (used in general geography questions alongside Indian straits)?
(a) Torres Strait (b) Bass Strait (c) Palk Strait (d) Bering Strait - Who founded the Indian Independence League?
(a) Rash Behari Bose (b) Subhas Chandra Bose (c) Bhagat Singh (d) Chandrashekhar Azad - Which Indian city hosted the 2010 Commonwealth Games?
(a) New Delhi (b) Mumbai (c) Kolkata (d) Chennai - The "Two-Nation Theory" was primarily propounded to justify:
(a) The partition of British India into India and Pakistan (b) Provincial autonomy (c) Dyarchy (d) The Communal Award - Which Indian state has one of the largest numbers of registered polytechnic colleges among Indian states?
(a) Maharashtra (b) Tamil Nadu (c) Karnataka (d) Uttar Pradesh - Who wrote the devotional poetry compiled in "Sur Sagar"?
(a) Surdas (b) Tulsidas (c) Kabir (d) Mirabai - Which is the largest all-weather port in India?
(a) Visakhapatnam Port (b) Mumbai Port (c) Chennai Port (d) Kandla Port - India became a republic on which date?
(a) 26 January 1950 (b) 15 August 1947 (c) 26 November 1949 (d) 2 October 1950 - Which Indian state is the largest producer of areca nut?
(a) Karnataka (b) Kerala (c) Assam (d) Tamil Nadu - Who was the first Indian to win an Olympic medal in badminton?
(a) Saina Nehwal (b) P.V. Sindhu (c) Prakash Padukone (d) Pullela Gopichand - Which Indian city is known as the "Diamond Capital of the World"?
(a) Surat (b) Mumbai (c) Jaipur (d) Ahmedabad - The "Beti Bachao Beti Padhao" scheme aims to:
(a) Improve the child sex ratio and promote girls' education (b) Provide housing subsidies (c) Promote organic farming (d) Build rural roads - Which Indian state was formed by bifurcating Andhra Pradesh in 2014?
(a) Telangana (b) Chhattisgarh (c) Jharkhand (d) Uttarakhand - Who was the Prime Minister of India when the Green Revolution began in the 1960s?
(a) Lal Bahadur Shastri, continued under Indira Gandhi (b) Jawaharlal Nehru (c) Morarji Desai (d) Charan Singh - Which is the highest peak of the Nilgiri Hills?
(a) Doddabetta (b) Anamudi (c) Mahendragiri (d) Kalsubai - The "Swachh Bharat Abhiyan" was launched in which year?
(a) 2014 (b) 2010 (c) 2019 (d) 2005 - Which Indian classical dance form originated in Andhra Pradesh's neighbouring region of Kuchipudi village?
(a) Kuchipudi (b) Kathak (c) Odissi (d) Sattriya - Who founded the Hindustan Republican Association, later renamed the Hindustan Socialist Republican Association?
(a) Ram Prasad Bismil and associates (b) Bhagat Singh alone (c) Chandrashekhar Azad alone (d) Ashfaqulla Khan alone - Which is the largest producer of mangoes among Indian states?
(a) Uttar Pradesh (b) Andhra Pradesh (c) Bihar (d) Karnataka - The "Salt Satyagraha" (Dandi March) began on which date?
(a) 12 March 1930 (b) 26 January 1930 (c) 6 April 1930 (d) 8 August 1942 - Which Indian state has one of the largest numbers of registered nursing colleges among Indian states?
(a) Karnataka (b) Tamil Nadu (c) Maharashtra (d) Uttar Pradesh - Who is considered the founder of the Aligarh Muslim University (established from the college he founded)?
(a) Sir Syed Ahmad Khan (b) Muhammad Iqbal (c) Maulana Azad (d) Mohammad Ali Jinnah - Which is the largest producer of guavas among Indian states?
(a) Bihar (b) Uttar Pradesh (c) Madhya Pradesh (d) Andhra Pradesh - The "Lahore Resolution" (later called the Pakistan Resolution) was passed in which year?
(a) 1940 (b) 1942 (c) 1946 (d) 1947 - Which Indian state is the largest producer of cardamom?
(a) Kerala (b) Karnataka (c) Tamil Nadu (d) Sikkim - Who translated the "Ramayana" into Awadhi as the "Ramcharitmanas"?
(a) Tulsidas (b) Valmiki (c) Kambar (d) Kabir - Which is the largest producer of papayas among Indian states?
(a) Andhra Pradesh (b) Karnataka (c) Gujarat (d) Maharashtra - The "Poona Pact" resulted in reserved seats for which community in provincial legislatures?
(a) The Depressed Classes (Scheduled Castes) (b) Muslims (c) Sikhs (d) Anglo-Indians - Which Indian city is known as the "Silicon Valley of India"?
(a) Bengaluru (b) Hyderabad (c) Pune (d) Chennai
Section C: Numerical Ability (Q76–90)
- Simplify: 195 ÷ 13 + 15 × 2 − 20.
(a) 25 (b) 23 (c) 27 (d) 21 - A sum of ₹48,000 amounts to ₹62,400 in 3 years at simple interest. Find the rate of interest per annum.
(a) 10% (b) 8% (c) 12% (d) 9% - The ratio of two numbers is 10:13. If their sum is 184, find the larger number.
(a) 104 (b) 100 (c) 108 (d) 96 - A shopkeeper buys an article for ₹1,560 and sells it for ₹1,950. Find the profit percentage.
(a) 25% (b) 20% (c) 30% (d) 15% - Find the average of the first sixty natural numbers.
(a) 30.5 (b) 30 (c) 31 (d) 29.5 - A train 360 m long crosses a pole in 36 seconds. Find its speed in km/h.
(a) 36 km/h (b) 30 km/h (c) 40 km/h (d) 45 km/h - If the cost price of 70 articles equals the selling price of 56 articles, find the profit percentage.
(a) 25% (b) 20% (c) 30% (d) 15% - Find the value of: 70% of 100 + 25% of 200.
(a) 120 (b) 115 (c) 125 (d) 110 - A and B together can complete a piece of work in 9 days. A alone can do it in 15 days. In how many days can B alone complete it?
(a) 22.5 days (b) 20 days (c) 24 days (d) 18 days - Find the compound interest on ₹90,000 at 10% per annum for 2 years, compounded annually.
(a) ₹18,900 (b) ₹18,000 (c) ₹19,500 (d) ₹17,500 - Solve for x: 15(x − 12) = 8x + 9.
(a) 27 (b) 26 (c) 28 (d) 25 - Find the area of a circle with radius 56 cm (use π = 22/7).
(a) 9,856 sq cm (b) 9,800 sq cm (c) 9,900 sq cm (d) 9,750 sq cm - A boat's speed in still water is 24 km/h; stream speed is 6 km/h. Find the time to cover 180 km downstream.
(a) 6 hours (b) 6.5 hours (c) 5.5 hours (d) 7 hours - Find the missing number in the series: 35, 70, 140, 280, ?
(a) 560 (b) 550 (c) 570 (d) 540 - A sum of ₹1,60,000 is divided between A and B such that A's share is 300% more than B's. Find B's share.
(a) ₹32,000 (b) ₹30,000 (c) ₹34,000 (d) ₹28,000
Section D: Computer Knowledge (Q91–100)
- Which of the following is used to input handwritten signatures or drawings digitally?
(a) A graphics/digitising tablet (b) A keyboard (c) A monitor (d) A speaker - What does "BIOS" stand for?
(a) Basic Input Output System (b) Binary Input Output System (c) Basic Internal Operating System (d) Binary Internal Operating System - Which of the following is used to compress and archive multiple files into one?
(a) A ZIP utility (b) MS Word (c) MS Excel (d) MS Access - What is the full form of "AI" in modern computing?
(a) Artificial Intelligence (b) Automated Interface (c) Applied Informatics (d) Automated Intelligence - Which key combination is used to switch to the desktop from an open application on Windows?
(a) Windows key+D (b) Ctrl+D (c) Alt+D (d) Shift+D - Which of the following is an example of a note-taking mobile application?
(a) Evernote (b) MS Word (c) MS Excel (d) Adobe Reader - What does "GPS" stand for?
(a) Global Positioning System (b) General Positioning System (c) Global Position Service (d) General Position Service - Which of the following is used to test whether a website is reachable over a network?
(a) The "ping" command (b) A word processor (c) A spreadsheet (d) A media player - What does "ATM" stand for in banking technology?
(a) Automated Teller Machine (b) Automatic Transfer Machine (c) Automated Transaction Machine (d) Automatic Teller Module - Which of the following is used to prevent glare and reduce eye strain while using a computer screen?
(a) An anti-glare screen filter (b) A keyboard (c) A mouse (d) A speaker
Answer Key with Explanations
Section A:
1.(a) A judge presides in a court, just as a referee officiates on a field.
2.(a) Each term triples: 6×3=18, 18×3=54, 54×3=162, 162×3=486.
3.(a) Wolf, fox, and jackal are wild canines, while a peacock is a bird, making it the odd one out.
4.(a) Each letter shifts one place forward: C+1=D, A+1=B, S+1=T, T+1=U, L+1=M, E+1=F, giving DBTUMF.
5.(a) By the Pythagorean theorem, distance = √(21²+28²) = √(441+784) = √1225 = 35 km.
6.(a) N is O's father, and P is O's brother, so N is P's father.
7.(a) The gaps increase by one each time: K(11)+3=N(14), N+4=R(18), R+5=W(23), W+6=AC(29).
8.(a) Since C≥D>E≥F, it follows directly that C≥F.
9.(a) Rank from the bottom = 84 − 36 + 1 = 49th.
10.(a) Following the order of operations: 120÷10=12, 12×5=60, 60+35=95, 95−22=73.
11.(a) J is at the left end (position 1); K is immediately right of J (position 2); L is tenth to the right of K, so L is at position 2+10=12; with fifteen people in the row, 3 people sit to the right of L.
12.(a) No, this does not necessarily follow: the "some custodians" who are supervisors may or may not include the specific custodians who are wardens.
13.(a) Each letter is coded by its position in the alphabet; applying the same rule, CIRCLE is coded as 3-9-18-3-12-5.
14.(a) Each term is multiplied by 0.9: 900×0.9=810, 810×0.9=729, 729×0.9=656.1, 656.1×0.9=590.49.
15.(a) The net turn is 90° anticlockwise plus 90° clockwise plus 180°, which equals 180° overall; facing north, a 180° turn gives south.
16.(a) Let B's present age be x and A's be 3x; five years ago, 3x−5 = 4(x−5), giving 3x−5 = 4x−20, so x=15.
17.(a) Each term follows ×2+2: 19×2+2=40, 40×2+2=82, 82×2+2=166, 166×2+2=334.
18.(a) 126, 140, and 168 are multiples of 14, while 150 is not.
19.(a) M is at the right end (position 13); N is immediately left of M (position 12); O is ninth to the left of N, so O is at position 12−9=3; 2 colleagues sit to the left of O (positions 1 and 2).
20.(a) Yes, this follows validly: all barracks house personnel, and everything that houses personnel requires maintenance, so all barracks require maintenance.
21.(a) Each term follows ×2+3: 8×2+3=19, 19×2+3=41, 41×2+3=85, 85×2+3=173.
22.(a) An architect designs a building, just as a composer creates a symphony.
23.(a) Each letter shifts one place forward: H+1=I, A+1=B, R+1=S, B+1=C, O+1=P, U+1=V, R+1=S, giving IBSCPVS.
24.(a) Position from the right = 110 − 48 + 1 = 63rd.
25.(a) Yes, this follows validly: all fire extinguishers are safety equipment, and no safety equipment is decorative, so no fire extinguisher is decorative.
Section B:
26.(a) Lal Bahadur Shastri was the first Indian to receive the Bharat Ratna posthumously.
27.(a) Article 32 provides the Right to Constitutional Remedies.
28.(a) Gurugram is known as the "Cyber City" of Haryana.
29.(a) The Sepoy Mutiny began at the garrison town of Meerut.
30.(a) Nagarjunsagar-Srisailam is the largest tiger reserve in India by core area.
31.(a) Lord Ripon introduced the Ilbert Bill.
32.(a) The Bhakra Nangal Dam is built on the Sutlej river.
33.(a) The Ashoka Chakra is the highest peacetime gallantry award given to civilians in India.
34.(a) Rajendra Prasad was the President of the Constituent Assembly of India.
35.(a) Maharashtra has one of the largest numbers of registered cooperative societies among Indian states.
36.(a) The Rowlatt Satyagraha was launched in response to the Rowlatt Act.
37.(a) There is no officially declared national fish of India at the central government level.
38.(a) Hiralal Shastri was the first Chief Minister of Rajasthan.
39.(a) Bengaluru is known as the "Aerospace Capital of India."
40.(a) The Battle of Diu was fought in 1509.
41.(a) The Himalayan Griffon Vulture is among the largest birds in India by wingspan.
42.(a) Periyar E.V. Ramasamy founded the Self-Respect Movement in Tamil Nadu.
43.(a) The Grand Trunk Road's alignment through Punjab's plains carries no notable elevation extreme, being largely a plains route.
44.(a) The capital shifted from Calcutta to Delhi in 1911.
45.(a) Punjab prominently celebrates the "Baisakhi" harvest festival.
46.(a) Manu Bhaker became the first Indian woman shooter to win an Olympic medal, at the 2024 Paris Olympics.
47.(a) The Torres Strait separates Australia from the Torres Strait Islands.
48.(a) Rash Behari Bose founded the Indian Independence League.
49.(a) New Delhi hosted the 2010 Commonwealth Games.
50.(a) The "Two-Nation Theory" was primarily propounded to justify the partition of British India into India and Pakistan.
51.(a) Maharashtra has one of the largest numbers of registered polytechnic colleges among Indian states.
52.(a) Surdas wrote the devotional poetry compiled in "Sur Sagar."
53.(a) Visakhapatnam Port is one of India's largest all-weather ports.
54.(a) India became a republic on 26 January 1950.
55.(a) Karnataka is the largest producer of areca nut among Indian states.
56.(a) Saina Nehwal was the first Indian to win an Olympic medal in badminton, a bronze at the 2012 London Olympics.
57.(a) Surat is known as the "Diamond Capital of the World."
58.(a) The "Beti Bachao Beti Padhao" scheme aims to improve the child sex ratio and promote girls' education.
59.(a) Telangana was formed by bifurcating Andhra Pradesh in 2014.
60.(a) Lal Bahadur Shastri, with the programme continuing under Indira Gandhi, oversaw the start of the Green Revolution.
61.(a) Doddabetta is the highest peak of the Nilgiri Hills.
62.(a) The "Swachh Bharat Abhiyan" was launched in 2014.
63.(a) Kuchipudi originated in the village of that name in Andhra Pradesh.
64.(a) Ram Prasad Bismil, along with associates, founded the Hindustan Republican Association.
65.(a) Uttar Pradesh is the largest producer of mangoes among Indian states.
66.(a) The Salt Satyagraha (Dandi March) began on 12 March 1930.
67.(a) Karnataka has one of the largest numbers of registered nursing colleges among Indian states.
68.(a) Sir Syed Ahmad Khan founded the college that became Aligarh Muslim University.
69.(a) Bihar is one of the largest producers of guavas among Indian states.
70.(a) The Lahore Resolution was passed in 1940.
71.(a) Kerala is the largest producer of cardamom among Indian states.
72.(a) Tulsidas translated the "Ramayana" into Awadhi as the "Ramcharitmanas."
73.(a) Andhra Pradesh is one of the largest producers of papayas among Indian states.
74.(a) The Poona Pact resulted in reserved seats for the Depressed Classes (Scheduled Castes) in provincial legislatures.
75.(a) Bengaluru is known as the "Silicon Valley of India."
Section C:
76.(a) 195÷13=15; 15×2=30; 15+30−20=25.
77.(a) Interest = 62,400−48,000 = ₹14,400 over 3 years; rate = (14,400×100)/(48,000×3) = 10%.
78.(a) The parts total 10+13=23; larger number = 184×13/23 = 104.
79.(a) Profit = 1,950−1,560 = ₹390; profit percentage = (390/1,560)×100 = 25%.
80.(a) The first sixty natural numbers sum to 1,830; average = 1,830/60 = 30.5.
81.(a) Speed = 360 m / 36 s = 10 m/s = 10×18/5 = 36 km/h.
82.(a) If CP of 70 articles equals SP of 56 articles, SP/CP per article = 70/56 = 1.25, a profit of 25%.
83.(a) 70% of 100 = 70; 25% of 200 = 50; sum = 120.
84.(a) Combined rate = 1/9; A's rate = 1/15; B's rate = 1/9−1/15 = 5/45−3/45 = 2/45, so B alone takes 45/2 = 22.5 days.
85.(a) Amount = 90,000×(1.10)² = 1,08,900; compound interest = ₹18,900.
86.(a) 15(x−12)=8x+9 gives 15x−180=8x+9, so 7x=189, x=27.
Section D:
91.(a) A graphics/digitising tablet is used to input handwritten signatures or drawings digitally.
92.(a) BIOS stands for Basic Input Output System.
93.(a) A ZIP utility is used to compress and archive multiple files into one.
94.(a) AI stands for Artificial Intelligence.
95.(a) Windows key+D is used to switch to the desktop from an open application on Windows.
96.(a) Evernote is an example of a note-taking mobile application.
97.(a) GPS stands for Global Positioning System.
98.(a) The "ping" command is used to test whether a website is reachable over a network.
99.(a) ATM stands for Automated Teller Machine.
100.(a) An anti-glare screen filter is used to prevent glare and reduce eye strain while using a computer screen.