Q.
If n > 1, the values of the positive integer m for which nm - 1 divides a= 1+ n+n2 +...+ n63 is /are
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a
8
b
16
c
32
d
64
answer is A.
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Detailed Solution
a=n64−1n−1=(n+1)n2+1n4+1n8+1n16+1n32+1
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