If the number 583_437 is completely divisible by 9, then the smallest whole number in the place of the blank digit will be
Number :Â 583_437
Let the missing digit = $$x$$
=> Sum of digits = 5 + 8 + 3 + $$x$$ + 4 + 3 + 7 = 30 + $$x$$
Clearly, sum of digits is between 30 and 39. The only number divisible by 9 and which lies between 30 and 39 is 36
=> $$30 + x = 36$$
=> $$x = 36 - 30 = 6$$
=> Ans - (D)
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