Question

Test dvisibility by 7
Pleqse answer my question as soon as​

Answer 1

Divisibility rule of 7:

Take the last digit of number , double it then subtract the number from the rest of the number of the resulting number is easily divisible by 7.Then original will also divisible by 7.

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Answer 2

Answer:

To test the divisibility by 7

double the last digit of the number and then subtract it from the remaining number. If the result will be divisible by 7 then the original number will also be divisible by 7.

Step-by-step explanation:

For example take the number 133

Double the last digit it will be 6.Now subtract 6 from 13 that is 13-6 = 6. Since 7 is divisible by 7 so 133 is also divisible by 7.

Hope it helps you !!!!!