The average of 7 numbers is 12. After discarding one number, the average becomes 11. What is the discarded number?

A 7
B 10
C 18
D 12

Correct Answer: 18

The average of 7 numbers is 12. total of 7 numbers is = (7x12) = 84 After discarding one number, the average of 6 numbers becomes 11 so, total of 6 numbers = (6x11) = 66 ∴ the discarded number is = 84 - 66 = 18 ans: 18
Bissoy MCQ
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