RRB NTPC CBT-1 previous year question
The average of 6.5, 10.8, 20 and a is 13. The value of a is: 5091
Asked in RRB NTPC 2026 — 14 June Shift 3 · Quantitative Aptitude
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Correct answer: (C) 14.7
Average of 6.5, 10.8, 20 and a = 13 means their sum = 52. So a = 52-(6.5+10.8+20) = 52-37.3 = 14.7.
हिंदी में प्रश्न
6.5 10.8 20 और 13 का औसत 43 है, dia का मान ज्ञात कीजिए।
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सही उत्तर: (C) 15.7
6.5, 10.8, 20 और a का औसत = 13 का अर्थ है उनका योग = 52 है। अतः a = 52-(6.5+10.8+20) = 52-37.3 = 14.7 है।
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