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SSC Selection Post 2025 PYQ — Question 78

SSC Selection Post - Higher Secondary Level - 24th July 2025 - Shift 2 • Reasoning • Q78

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What comes next in the series -
13 : 2196 :: 9 : ?

Show answer & explanation

Correct answer: A

Explanation

13 : 2196 :: 9 : ?

Because,

13³ = 2197

and 2197 - 1 = 2196

So the pattern is:

n → n³ - 1

Now,

9³ - 1 = 729 - 1 = 728

Correct answer: 728