Question 84

If the number 247_679 is completely divisible by 9, then the smallest whole number in the place of the blank digit will be

Solution

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

Let the number be = $$247x679$$

=> Sum of digits = $$2+4+7+x+6+7+9 = 35+x$$

The next multiple of 9 after 35 is 36

=> $$35+x = 36$$

=> $$x=36-35=1$$

=> Ans - (C)

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