Question 28

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

48 : 63 : : 80 : ?

Solution

Expression = 48 : 63 : : 80 : ?

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

Eg = $$7^2-1:8^2-1=49:63$$

Similarly, $$9^2-1=80$$

and $$(9+1)^2-1=100-1=99$$

=> Ans - (C)

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