Directions : In each of the following Questions, select the related letter / word /number from the given alternatives.
Expression : ? : 63 : : 08 : 26
The pattern followed above is = $$n^2-1:n^3-1$$
=> $$8:26=3^2-1:3^3-1$$
Similarly, $$63=4^3-1$$
=> $$4^2-1=16-1=15$$
=> Ans - (D)
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