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Find the average of all whole numbers between 1 and 100 that end in 3 .

Find the average of all whole numbers between 1 and 100 that end in 3 . Correct Answer 44

The numbers are 3, 13, 23.33.......93 So difference between each number is same. This series in AP. The avarage formula for AP is (first + last term)/2 Therefore the answer is (3 + 93)/2 = 48.

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