RRB NTPC CBT-1 previous year question
The average of 6.5, 10.8, 19.9 and a is 18. The value of a is: 5094
Asked in RRB NTPC 2026 — 14 June Shift 1 · Quantitative Aptitude
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Correct answer: (C) 34.8
Sum of 6.5+10.8+19.9=37.2. Since the average of four numbers is 18, total sum=72, so a=72-37.2=34.8.
हिंदी में प्रश्न
6.5 10.8 19.9 और a का औसत 18 है, dla का मान ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (C) 33.8
6.5+10.8+19.9=37.2 का योग। चूँकि चार संख्याओं का औसत 18 है, कुल योग=72, अतः a=72-37.2=34.8।
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