Question

3682 is divisible by 7 or not justify without actual division

Answer 1

Answer:

First we have to double the number which is in one's place and subtract it with the remaining numbers

2×2=4

So,368-4

=364

now, double 4 and subtract from remaining numbers

4×2=8

so,36-8

=28

28is divisible by 7 ,then this number is divisible by 7

You can find whether a no. is divisible by 7 or not by using this method.