Question 31

In the following question, select the odd number pair from the given alternatives.

Solution

(A) : $$122-1=121=11^2$$ ; $$11^3=1331$$

(B) : $$173-1=172$$ not a perfect square

(C) : $$197-1=196=14^2$$ ; $$14^3=2744$$

(D) : $$290-1=289=17^2$$ ; $$17^3=4913$$

=> Ans - (B)

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