Question

An 8-digit number 4252746B leaves remainder 0 when divided by 3. Find the value of B ?​​

Answer 1

Answer:

B = 0, 3 , 6, 9

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Answer 2

Answer:

This is a question based on rules of divisibility. The rule of divisibility of 3 is that the sum of all the digits of the number should be divisible by 3. We have 4 + 2 + 5 + 2 + 7 + 4 + 6 + B = 30 + B, which is completely divisible by three. So B can take value as 0, 3, 6, or 9. Hence 4 values are possible for B.

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