Question

diviisibility rule of 7​

Answer 1

Step-by-step explanation:

If you double the last digit of a 3 or more digit no and subtract it from the rest of the no and the answer is 0 or divisible by 7 the no is divisible by 7

Answer 2

Answer:Divisibility rule of seven is little bit complicated,as

Step 1) multiply the ones digit of the number with 2.

Step2)subtract the product from rest of the numbers

Step3) if the number obtained is divisible by 7 then the whole number is divisible by 7

For ex check whether 91 is divisible by 7 or not

As we know

Step 1 )1ײ=2

Step 2)9-2

Step3)7÷7=1

So 91 will be divisible by 7

ie,13×7=91

Hope you understand ma'am