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Question

In the following question, select the related number from the given alternatives.

49 : 169 :: 66 : ?

This question was previously asked in
SSC CGL 2017 (Tier 1) Previous Year Paper (16-Aug-2017) (Shift 1)
The correct answer is

144

The pattern is: square the sum of the digits of the first number.

Check: For 49, digits sum to \(4+9=13\), and \(13^2=169\).

Apply: For 66, digits sum to \(6+6=12\), and \(12^2=144\).

Hence the missing number is 144.

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