BD Merit - Freelancing, BCS, Bank, Primary, Admission, NTRCA

1 . The average of 6 number is 8.5, when one number is discarded the average of the remaining numbers becomes 7.2. What is the discarded number?

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Answer: Option E

Explanation:

The average of 6 numbers is 8.5

So, the sum of 6 numbers is 8.5x6 or 51

The average of 5 numbers is 7.2

So, the sum of 5 numbers is 7.2x5 or 36

So, the discarded number is 51 - 36 or 15

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