Question

Four of the following five are alike in a certain way and so form a group. Which is the one that does not belong to that group?   

Options

• 93

• 57

• 69

• 65

Answer 1

65

Explanation:

Except for number 65, all others are multiples of 3.

93 ÷ 3 = 31, 57 ÷ 3 = 19

69 ÷ 3 = 23, 87 ÷ 3 = 29

But, 65 ÷ 3 = 21.66