A) 31
B) 11
C) 13
D) 17
Correct Answer: A
Solution :
(a): \[{{5}^{61}}+{{5}^{62}}+{{5}^{63}}={{5}^{61}}(1+5+{{5}^{2}})={{5}^{61}}\times 31\] which is divisible by 3.You need to login to perform this action.
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