Three of the following four are alike in a certain way and thus form a group which is the one that does not belong to that group.
(1) 4-125
(2) 3-64
(3) 2-8
(4) 6-343
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 3.
(1) 4-125 → (4 + 1)3 = 125
(2) 3-64 → (3 + 1)3 = 64
(3) 2-8 → (2 + 1)3 = 27 ≠ 8
(4) 6-343 → (6 + 1)3 = 343