?
Find the odd number/letters from the given alternatives.
Answer & Solution
Correct Answer:
Option
B
626-1 = 625 = 252.
962-1 = 961 = 312.
1090-1 = 1089 = 332.
But,
841-1 = 840 (not a perfect square).
Otherwise, 841 is a perfect square of 29, other are not a perfect square.
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