Question

Among the following numbers, find the number which is divisible by $7$.

• A. $2,356$
• B. $6,531$
• C. $1,275$
• D. $2,376$

Answer 1

The correct option is B $6,531$

We know the divisibility rule for $7$:
Choose the last digit of the number, multiply it by $2$, and subtract the product from the rest of the number and the answer is $0$ or divisible by $7$.
Here, $6531$ is divisible by $7$.
When we multiply $2$ with the last digit, the number becomes $6,532$.

Then subtract the last digit of number $2$ from $653$,

we get $653-2=651$ is divisible by $7$.