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6 January, 22:10

Genevieve forgot the last two digits of her four digit locker code the digit she has right now are 21 if the number is divisible by 5 x 6 in by seven what is Genevieve's locker code

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  1. 6 January, 22:13
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    If a number is divisible by 5, 6, and 7,

    it's divisible by 5 x 6 x 7 = 210, the least

    common multiple of the numbers. So her number

    is a multiple of 210. The only 4-digit multiple

    is 210 that starts 210 _ is 2100, so that's her number.
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