Question

what is the easy trick
seven divisibility rule?​

Answer 1

Answer:

Step-by-step explanation:

Here are two rules which can be utilized to test divisibility by 7: Rule 1: Remove the last digit, double it, subtract it from the truncated original number and continue doing this until only one digit remains. If this is 0 or 7, then the original number is divisible by 7.

Answer 2

Answer:

the easiest method take any number and multiply the last digit by 2 and subtract the product from rest of the number till you get 1digit answer that should be either 0,7

Step-by-step explanation:

for example

7841(4*2=8)

-. 8

=783(3*2=6)

-. -6

=77(7*2 =14)

-14

=6(3*2=6)

-6

=0

So answer is 0

so 78414 is divisible by 7