Question

What least number should be replaced for *so that number 372 *0 is exactly divisible by 3? a) 2 b) 3 c) 4 d) 5

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Answer 1

$\LARGE\color{black}{\colorbox{#FF7968}{A}\colorbox{#4FB3F6}{N}\colorbox{#FEDD8E}{S}\colorbox{#FBBE2E}{W}\colorbox{#60D399}{E}\colorbox{#6D83F3}{R}}$

A number is divisible by 9 if the sum of its digits is divisible by 9.

Now, Sum of the digits in given number =6+7+3+0+1+2=19, which is not divisible by 9.

But, if we add 8 to this sum, it becomes 19+8=27, which is divisible by 9

So, 6730182 is divisible by 9

So, the least number is 8 which should replace for ∗ in the given number.