25^102 - 4^102 is divisible by
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Solution:-
25^102 - 4^102
= (5)^204 - (4)^102
= (5)^204- (2)^204
= (5)^4×51 - (2)^4×51
= (5)^4 - (2)^4
= 625 - 16
= 609 divisible by 29 = 21 times
your right answer is option(D) = 29 ans
25^102 - 4^102
= (5)^204 - (4)^102
= (5)^204- (2)^204
= (5)^4×51 - (2)^4×51
= (5)^4 - (2)^4
= 625 - 16
= 609 divisible by 29 = 21 times
your right answer is option(D) = 29 ans
devjindal83:
Why 51 is cancelled there
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0
Answer:
are u a student of brix pmt academy?
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