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

User Saani
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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.

User Theodor Keinstein
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