UP Police Constable Exam Model Paper 2

Question : 109 of 150

Marks: +1, -0

Directions: Select the related number from the given alternatives.
10 : 91 : : 9 : ?

Solution:

10 : 91 → 10 : 10

^2

– 9
Thus, 9 : ? → 9 : 9

^2

– 9 = 72
Hence, "72" is the correct answer.

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