SSC CPO practice question
Find the LCM of 16, 20, 30 and 54.
From a SSC CPO Quantitative Aptitude practice set · Quantitative Aptitude
Tap an option to check your answer.
Show answer and explanation
Correct answer: (A) 2160
Prime factorise: 16 = 24; 20 = 22 × 5; 30 = 2 × 3 × 5; 54 = 2 × 33. LCM takes every prime at its highest power: 24 × 33 × 5 = 2160.
हिंदी में प्रश्न
16, 20, 30 और 54 का ल.स. (LCM) ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (A) 2160
अभाज्य गुणनखंडन: 16 = 24; 20 = 22 × 5; 30 = 2 × 3 × 5; 54 = 2 × 33। ल.स. में प्रत्येक अभाज्य की उच्चतम घात ली जाती है: 24 × 33 × 5 = 2160।
More solved Quantitative Aptitude questions
- On a 1.6 km circular track, two runners run in the same direction, starting together from the same point. The ratio of their speeds is…
- A is thrice as efficient as B and can complete a work 40 days before B. In how many days can A alone complete the work?
- The average of 4 numbers is 71. If 3 of the numbers are 16, 85, 14, find the remaining number.
- Find the value of 1³ + 2³ + 3³ + … + 30³.
- The temperatures (in °C) recorded in 5 cities on a winter day — four of the five values are 11, 15, 19, 23, and it is known that this…
- The true discount on a certain sum due in 1 years at 15% per annum is Rs. 175. Find the banker's gain, using BG = (TDxRxT)/100.