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23 May, 07:23

Prove the divisibility of the following number:

7^6 + 7^5 - 7^4 is by 11

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  1. 23 May, 08:24
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    7^6=117649

    7^5=16807

    7^4=2401

    117649+16807-2401=132055

    132055/11=12005

    Because the above division problem led to the result of a whole number (or integer), that means that the number given is divisible by 11.
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