Math, asked by psinha2897, 1 year ago

Which of the following will completely divide 5^71 + 5^72 + 5^73 ? (A) 150 (B) 160 (C) 155 (D) 30

Answers

Answered by Monu631
34
We will solve this as
5^71 + 5^72 + 5^73
By taking 5^70 common,

5^70 ( 5+5^2 + 5^3)
5^70(5+25+125) = 5^70 * 155.
So, the above sum will be completely divide by (C)155.

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