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Maths Puzzle
What is the last three digit of 78^2365 and 67^2365
without using binomial theorem?
Read Solution (Total 1)
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- (78)^4n reminder will 4
2365/5 reminder is 1
it mean 6*8=48 last digit is 8
(67)^4n reminder will 1
2365/5 reminder is 1
it mean 1*7=48 last digit is 7
now 7+8=15
so reminder is 5
- 11 years agoHelpfull: Yes(0) No(8)
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