If 6x5 is exactly divisible by 9, then the least value of x is A. 1 – InterviewSolution

1.

If 6x5 is exactly divisible by 9, then the least value of x is A. 1 B. 4 C. 7 D. 0

Answer»

We know that if sum of digits of a number is divisible by 9, then the number is divisible by 9.

Here,

6 + x + 5 = multiple of 9

x + 11 = 0, 9, 18, ….

Hence,

x + 11 = 18

∴ x = 7

∴ the least value of x is 7

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