Give stream of consciousness and then the final answer. For some integer y, y^2 - 5 is divisible by all of the following EXCEPT\nOptions:\n(A) 29\n(B) 30\n(C) 31\n(D) 38\n(E) 41
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Hint: y^2-5 (y is an integer) is never multiple of 3 (try to prove this), hence 30 is out.
The final answer: (B).
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