The average of 25 results is 18, that of first twelve is 14 and of last twelve is 17 . Thirteenth result is?

Question

Accepted Answer

Thirteenth Result = sum of all 25 results - sum of first 12 results - sum of last 12 results. = 25 x 18 - 12 x 14 – 12 x 17 =78

Discussion & Comments