A) 150
B) 160
C) 155
D) 30
Correct Answer: C
Solution :
[c] \[{{5}^{71}}+{{5}^{72}}+{{5}^{73}}\] \[={{5}^{73}}(1+5+{{5}^{2}})={{5}^{70}}\times 5\times 31\] \[={{5}^{71}}\times 155\] Which is exactly divisible by 155.You need to login to perform this action.
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