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Do the division, if there is no remainder, it is divisible. Seriously, many of the "divisibility rules" that have been discovered become more complicated than doing the actual division. For practical purposes, just learn the divisibility rules for a few simple cases (divisibility rules by 2, 4, 8, 5, 10, 3, 9, 7, 11, and 13), and for all other cases, just do the division.
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What is the divisibility rules for 93?
It is divisible by any of its factors which are: 1, 3, 31 and 93
What are the divisibility rules from 1-25?
26
What are the divisibility rules of factor 855?
1 3 9 19 57 95 171 285 855
What divisibility rules can be used to find the factor pairs of 80?
Those for 1, 2, 4, 5 and 8.
What are the divisibility rules of 42?
It is divisible by any of its factors which are: 1, 2, 3, 6, 7, 14, 21 and 42
What are the divisibility rules of all prime numbers?
The divisibility rules for a prime number is if it is ONLY divisible by 1, and itself.
How can divisibility rules help you to find the prime factorization of 53?
The divisibility rules will show that 53 is not divisible by anything other than 1 and itself. Since it is already prime, it doesn't have a factorization.
What is the divisibility rules for 93?
It is divisible by any of its factors which are: 1, 3, 31 and 93
What are the divisibility rules from 1-25?
26
How do you know when you fount all the factor pairs of 26?
You only have to test the numbers 1 through 5. If you know the rules of divisibility, you know that 3, 4 and 5 aren't factors.
What are the divisibility rules of factor 855?
1 3 9 19 57 95 171 285 855
What divisibility rules can be used to find the factor pairs of 80?
Those for 1, 2, 4, 5 and 8.
What does it means to use the divisibility rules to find factor pairs for eighty?
Factors are divisors. If you know the divisibility rules, you know that 80 is divisible by 1, 2, 4, 5 and 8. If you divide 80 by those numbers, you find the other half of the factor pairs.
What are the divisibility rules of 42?
It is divisible by any of its factors which are: 1, 2, 3, 6, 7, 14, 21 and 42
What divisibility rules were combined to make the divisibility rule of 36?
You have to use the rules of 4 and 9 Using the rules of 2 and 18 won't work because the smallest common multiple of 2 and 18 is 18 not 36. 3 and 12 won't work either because the smallest common multiple of 3 and 12 is 12 not 36. However 4 and 9 does work because their biggest common divisor is 1 so multiplying them works. The biggest common divisor of 2 and 18 is 2 and the biggest common divisor of 3 and 12 is 3
What divisibility rules are 141divisible by?
I am not sure what you are asking but 141 is divisible by the number 1, itself (141) and certainly by the number 3 so it is not a prime number.
How can your knowledge of divisibility rules help you to determine whether a number is prime or composite?
If a number is divisible by anything other than itself and 1, it's composite.
