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a number is divisible by 12 if the number is also divisible by both 3 and 7. You mean a number is divisible by 21 if it is divisible by 3 and 7.

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โˆ™ 2012-07-11 17:29:08
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Q: Example of divisibility rule for 21?
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Related questions

What is the divisibility rule for 21?

For any practical purpose, it is easier to simply divide, instead of looking for fancy divisibility rules. However, you can apply the divisibility rules for 3 and for 7. This works because (a) their product is 21, and (b) these numbers are relatively prime.


What divisibility rules were combined to make the divisibility rule of 36?

The divisibility rules of 4 and 9 are combined to make the divisibility rule of 36.


What is the divisibility rule for 34?

There is no easy rule for divisibility by 34.


How does the divisibility rule for 4 and 8 work?

why does the divisibility rule work for 4


Why does divisibility rule for 6 work?

By tautology. If it did not work, it would not be a divisibility rule!


Is there a divisibility rule for 24?

there is a divisibility for 24 the rule is you can divide 24 as 6 and 4 i think


What are the divisablity rules?

the divisibility rule for 2 is: The number is even;the last digit ends with a 2,4,6,8,10, etc.The divisibility rule fir 3 is: The sum of the number is divisible by 3The divisibility rule for 4 is: The last two digits are divisible by 4The divisibility rule for 5 is: The number ends with a 5 or 0The divisibility rule for 6 is: The sum CAN be divisible by 2 and or 3The divisibility rule for 9 is: The sum of the number is divisible by 9The divisibility rule for 10 is : The number ends with a 0


What is the divisibility rule for 36?

123456789


What is divisibility rule?

What is the divisblity rule by 8


What is a sentence for the word divisibility?

Divisibility is a noun meaning being capable of being divided. Example sentences: "The rule for divisibility by 5 is that the number ends in 0 or 5." "The easy divisibility of the cookies prevented fights among the children." "The divisibility of this pie is questionable, at best."


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 for 6?

Rule: If it is divisible by 2 and by 3Numbers are divisible by 6 if they are divisible by 3 and 2. Therefore, for example, since 18 is divisible by 3 and 2, it is also divisible by 6.The divisibility rule for 6 is, it can go into the number if 2 and 3 can also.


What is divisibility rule of 7?

There is no rule for 7 :P


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.


What are the divisibility rules from 1-20?

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What divisibility rule can be divided evenly by 2 and 895?

A divisibility rule is a statement of procedures to determine divisibility. For example:"A number is divisible by 2 if it ends with 0, 2, 4, 6 or 8".It does not make any sense to divide such a sentence by 2 or 895 or any other number!


How can you use a divisibility rule to determine if117 is prime or composite?

By using the divisibility rule for 3, we find that 117 is divisible by 3. That makes it composite.


What is the divisibility rule?

Able to Be Divided


What is the Divisibility rule of 5?

2.50


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.


Which of the Divisibility Rules go on 741?

The rule for 1 and the rule for 3.


What is divisibility rule for two?

the number is even.


What is the divisibility rule of 100?

It has to end 00.


What is the divisibility rule of 60?

it is divisible by5