Find the digit X in the number 47X3 so that the number is divisible by 9.
Note
A number is divisible by 9 if the sum of its digits is a multiple of 9. 4+7+X+3 = 14+X; the smallest multiple of 9 ≥14 is 18, so X = 4.
Find the digit X in the number 47X3 so that the number is divisible by 9.
A number is divisible by 9 if the sum of its digits is a multiple of 9. 4+7+X+3 = 14+X; the smallest multiple of 9 ≥14 is 18, so X = 4.