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Add four times the last digit to the remaining leading truncated number. If the result is divisible by 13, then so was the first number. Apply this rule repeatedly as necessary.
Here is an example.
You want to know if 50661 is divisible by 13. Add 4 times the last digit to the remaining numbers you have after removing the last digit. So we add 1x4=4 to the number we have after taking the 1 after 50661. This is 5066+4=5070. Now do this again. 4x0 is 0 and add this to the number you get by taking 5070 and truncating the number.. ie drop the last 0.
So we have 507+0=507.
Now add 7x4=28 so 50. Of course 50 comes from 507 after dropping the 7.
You have 78. Now since 78 is 6x13, the original number must have been divisible by 13 too.
This is one of the more complicated divisibility rules.
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What is the divisibility rule for 13?
There is no divisibility rule for 13 because it is a prime number. If you are thinking: why is there a divsibility rule for 2 and 3 then. Well, i don't know so go look it up on google.
What is the Divisibility rule of 5?
2.50
How can you use a divisibility rule to determine if117 is prime or composite?
117 is a composite. I know because suming the digits is 9. A number is a multiple of 117 if it's a multiple of 9 and 13 at the same time
What is the divisibility rule for 41677?
Just carry out the division.
What is the rule for divisibility of 3?
It is 3 6 9
What is the divisibility rule for 13?
There is no divisibility rule for 13 because it is a prime number. If you are thinking: why is there a divsibility rule for 2 and 3 then. Well, i don't know so go look it up on google.
What is the divisibility rule for 143?
The number must be divisible by 13 and by 11.
Divisibility rule for 13?
13 is a prime number - it can only be divided by 1 and itself (for an integer answer).
Why does divisibility rule for 6 work?
By tautology. If it did not work, it would not be a divisibility rule!
What is divisibility rule?
What is the divisblity rule by 8
What is the divisibility rule for 34?
There is no easy rule for divisibility by 34.
Why does divisibility rule for 2?
The divisibility rule for 2 works because the base of our number system, 10, is divisible by 2.
What is the divisibility rule?
Able to Be Divided
What is the Divisibility rule of 5?
2.50
Which of the Divisibility Rules go on 741?
A number is a multiple of 741 if it's a multiple of 3, 13 and 19 at the same time 741 = 3 x 13 x 19
What is the 1st of rule divisibility?
Judging by some of the questions asked on this site, the first rule is that divisibility is a concept that applies only to whole numbers.
What is the divisibility rule for 2 squared 1?
2 squared 1 = 4 so the divisibility rule is that it is divisible by 1, 2 and 4.
