Instructions

In each of the following questions, select the related letter/word/number from the given alternatives :

Question 155

25 : 37 : : 49 : ?

Solution

Expression = 25 : 37 : : 49 : ?

The pattern followed is = $$n^2:(n+1)^2+1$$

Eg = $$5^2:(5+1)^2+1=25:37$$

Similarly, $$49=7^2$$

Thus, $$(7+1)^2+1=64+1=65$$

=> Ans - (C)

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