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Zielflug
[23.3K]
2 years ago
15
Prove the divisibility of the following numbers by 7
Mathematics
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1
answer:
oee
[108]
2 years ago
3
0
5^5 mod 7 = 3
5^4 mod 7 = 2
5^3 mod 7 = 6
3 -2 +6 mod 7 = 0
Therefore, 5^5 -5^4 +5^3 mod 7 = 0 and that sum is divisible by 7.
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