Question

If 315z is a multiple of 3, where z is a digit, what might be the values of z?​

Answer 1

Answer =

Z will aslo be a multiple of 3

Like 3,6,9,12,15

Answer 2

Answer:

Z can take the values like 0, 3, 6 and 9

Step-by-step explanation:

For a number to be a multiple of 3 the sub of its digits should add and the addition should be a multiple of 3

In this case 315z --> (3 + 1 + 5 + z) = (9 + z)

so 9 + z should be a multiple of 3. So we need to see the table of 3 and add such numbers in the position of z which will make ( 9 + z ) a multiple of three

like 9 + 0 = 9 which is multiple of 3,

9 + 3 = 12 which is multiple of 3

9 + 6 = 15 which is multiple of 3

9 + 9 = 18 which is multiple of 3

so we can have the following values for Z --> 0, 3, 6 and 9