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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