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Question 28
In the following question, select the related number from the given alternatives.
48 : 63 : : 80 : ?
Solution
Expression =Â 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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