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crackgmat007
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(n +1) (n-1) = (n^2 - 1)
Statement (1): Consider n = 5, remainder = 0
Consider n = 9, remainder = 8
Not Sufficient.
Statement (2): Consider n = 5, remainder = 0
Consider n = 8, remainder = 15
Not sufficient.
(1) + (2)
Consider any number 5, 7, 11 - the remainder is always 0.
(C)
