Question

if X is a digit such that 67 X 51 is divided by 9 find the posible value of X

Answer 1

Answer:

Divisibility rule for 9 = sum of all the digits is divisible by 9

Digit = 67x51

Sum = 6+7+x+5+1 = 19+x

So, larger than 19 the multiple of 9 is 27.

19 + x = 27

x = 27 - 19

x = 8

Hence the value of x be single digit.so we cannot take it more.

So, the possible value of x is 8.