Question
What will be the least value of x so that the 5-digit
number 627x5 becomes divisible by 9?Solution
Sum of digits = 6 + 2 + 7 + x + 5 = 20 + x For divisibility by 9 → 20 + x must be multiple of 9 Next multiple of 9 after 20 is 27 → x = 7
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