gregisyoutubing gregisyoutubing

30-08-2021
Mathematics

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if 12z5 is a multiple of 3, where z is a digit. what might be the values of z?

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susy2237 susy2237

30-08-2021

Answer:

Playing with Numbers

∵ 31 z5 is divisible by 3. ∴ ( 9 + z) must be divisible by 3. since, z is a digit. ∴ Possible values of z are 0, 3, 6 or 9.

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