Question

if 31z5 is a multiple of 3,where z is a digit, what might be the values of z​

Answer 1

Step-by-step explanation:

Playing with Numbers

If 31z5 is a multiple of 3, where z is a digit, what might be the values of z? ∵ 31 z5 is divisible by 3. ∴ ( 9 + z) must be divisible by 3. since, z is a digit.

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SOLUTION

Answer 2

Answer:

It is z=3

3135 is multiple of 3 by 3×145

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