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Question 15
Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different.
Solution
In 10Â : 123,
$$(10 + 1)^2 +Â 2$$ = 121 +Â 2 = 123
In 17 : 290,
$$(17 + 1)^2 + 2$$ = 324 - 34 = 290
In 14 : 227,
$$(14 + 1)^2 + 2$$ = 225 + 2 = 227
In 11 : 146,
$$(11 + 1)^2 + 2$$ = 144 + 2 = 146
$$\therefore$$ The correct answer is option B.
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