SSC CHSL 10 Aug 2021 Shift 1 Paper

Section: General Intelligence

Question : 30 of 100

Marks: +1, -0

Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the one that is different.

Solution:

From options,
(a)

17: 291

⇒(17)^{2}+2=289+2=291

(b)

15: 227

⇒(15)^{2}+2=225+2=227

(c)

13: 169

⇒(13)^{2}+2=169+2=171 ≠ 169

(d)

11: 123

⇒(11)^{2}+2=121+2=123

∴ 13: 169

is different from others.

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