Question

Find Aritmetic mean of even numbers among the 10 natural numbers?

Answer 1

6 is the mean of observations

Answer 2

Input : 7

Output : 8

(2 + 4 + 6 + 8 + 10 + 12 + 14)/7 = 8

Input : 5

Output : 6

(2 + 4 + 6 + 8 + 10)/5 = 6