Question

4. If 31z5 is a multiple of 3, where z is a digit, what might be the values of z?

Answer 1

Answer:

z=3

Step-by-step explanation:

multiples of 3 means when we add all no we should get the multiples of 3. 3+1+3+5=15

Answer 2

Answer:

z=3

Step-by-step explanation:

3+1+3+5*3=30....