Question

31z5 multiple of 9 where z is a digit what is the value of z?​

Answer 1

Answer:

Correct answer is 9

Step-by-step explanation:

Given that

 31z5 is a multiple of 9. 

According to the divisibility rule of 9, the sum of all the digits should be a multiple of 9. 

Therefore, 

3+1+z+5=9 OR 18

⇒z=9−9=0

⇒z=18−9=9