Question

Which smallest digit will replace ? in the number 678?74 to make it divisible by 3?

• A. 2
• B. 0
• C. 1
• D. 3

Answer 1

The correct option is C 1

The given number is 678?74.

Divisibility rule of 3: For a number to be divisible by 3, the sum of the digits should be divisible by 3.

Sum of the digits of the number = 6 + 7 + 8 + 7 + 4 + ?

= 32 + ?

The nearest number to 32, which is divisible by 3, is 33.

To get 33, we have to add 1 to 32.

Therefore, the missing digit should be 1.

So, the number should be 678174.