4^61+4^62+4^63+4^64+4^65 is divisible by which number
4^61+4^62+4^63+4^64+4^65 is divisible by which number
joy , 8 Years ago
Grade 12th pass
Algebra> 4^61+4^62+4^63+4^64+4^65 is divisible by ...
1 Answers
Arun
(461 + 462 + 463 + 464) = 461 x (1 + 4 + 42 + 43) = 461 x 85. = 460 x (4 x 85). = (460 x 340), which is divisible by 10.
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