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