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7 June, 08:20

When n is divided by 7, the remainder is 4. What is the remainder when n+3 is divided by 7

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  1. 7 June, 08:25
    0
    N = 7k + 4 where k is an integer

    n + 3 = 7k + 4 + 3 = 7k + 7

    which is divisible by 7

    so the remainder is 0 < - - - Answer
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