Three of the following four are alike in a certain way and hence form a group. W

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Question
Three of the following four are alike in a certain way and hence form a group. Which is the one that does not belong to that group?
Options
A. 42
B. 72
C. 110
D. 152

Correct Answer

152

Explanation

$42 = 7^{2} - 7$

$9^{2} - 9$ = 72

$11^{2} - 11$ = 110

$12^{2} + 8$ = 152

Except 152, others show the same trend.

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