Banking Exams Quant — Question 1787
Question
The average of 11 numbers is 50. The average of the first 6 is 49 and that of the last 6 is 52. What is the sixth number?
- 54
- 55
- 56
- 58
Correct answer
C — 56
Explanation (English)
Sum of 11 numbers = 550. Sum of first 6 = 294; sum of last 6 = 312. The sixth number is counted in both, so it = 294 + 312 − 550 = 56.
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