- The arithmetic mean of seventy five numbers is calculated as 35. If each number is increased by 5, then mean of new numbers is

a. 30

b. 35

c. 40

d. 45

## EXPLANATION

When each number in a set is increased by a constant amount, the mean of the set also increases by that constant amount.

The original mean is 35, and each number is increased by 5. Therefore, the new mean is (35 + 5 = 40).

So, the correct option is:

c. 40

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