Question

if 42 * 5 is a multiple of 9 and x is a dagit then find the value of x ?

Answer 1

the value of x will be 7

Answer 2

Solution :-

42x5 is a multiple of 9.

We know about the divisibility rule of 9. If the sum of the digits of any number is divisible by 9 then the whole number will be divisible by 9.

Multiples of 9 are : 9, 18, 27, 36, 45, 54, 63, 72, 81, ......

4 + 2 + x + 5

⇒ 11 + x = 18

⇒ x = 18 - 11

⇒ x = 7

So, the value of x is 7 and the number is 4275, which is exactly divisible by 9.

4275 ÷ 9 = 475

Answer.