what is the divisibility rule of 7
Answers
Answered by
8
To find out if a number is divisible by seven, take the last digit, double it, and subtract it from the rest of the number. If you get an answer divisible by 7 (including zero), then the original number is divisible by seven. If you don't know the new number's divisibility, you can apply the rule again.
salvee:
11 divisible rule
tell me
Take the alternating sum of the digits in the number, read from left to right. If that is divisible by 11, original number will also be divisible by 11
ok
The (sum of the odd numbered digits) - (sum of the even numbered digits) is divisible by 11. The number is divisible by both 3 and 4. Delete the last digit from the number, then subtract 9 times the deleted digit from the remaining number. If what is left is divisible by 13, then so is the original number.
Answered by
2
take last digit of a number
multiply it by 2
subtract the answer from remaining number
if you get answer divisible by 7, including zero,
then original number is divisible by 7
multiply it by 2
subtract the answer from remaining number
if you get answer divisible by 7, including zero,
then original number is divisible by 7
hi
will u help in my q\a
sure, if I can
ok
will u be my friend
add me
Similar questions