Question

if 31z5 is a multiple of 3 where zis a digit what might be the value of z
(please say answer i will like you and I will make you as brain list​)

Answer 1

Complete step-by-step solution:

We have been given a number of 31z5 is a multiple of 3.

We have to find the value of z.Now, we know that if the sum of all digits of a number is divisible by 3, then the number is also divisible by 3.So,

we check the divisibility of the given number.We have 31z5=3+1+z+5⇒9+zNow, as z is a single digit,

the value of z will be from 0−9.

Now, we add the all possible values to the sum of digits and observe the sum that for which digit the sum is divisible by 3.

So, the possible values of z will be0+9=99+1=109+2=119+3=129+4=139+5=149+6=159+7=169+8=179+9=18Now, from obtained sum of digits only 9,12,15,18 are divisible by 3.

So, the possible values of z are 0,3,6,9.

Hope this will help you buddy...

Have a wonderful day ahead...

Answer 2

Answer:

the value of z can be 0,3,6,9