Question

If 42 x 5 is a multiple of 9 and x is a digit, then find the value of x

Answer 1

Step-by-step explanation:

42x5 is a multiple of 9 where x is a digit.

For a number to be divisible by, the sum of the digits should be = 9.

So 4+2+x+5 = 11+x = 2+x.

So if 2+x=9, then x = 9–2 = 7. Answer

So the number is 4275 which is 9*475.