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4 and 9
8 and 27
25 and 49
16 and 45
12 and 35
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoBoth 2 and 5 are prime numbers because they have only two factors whereas composite numbers have more than factors.
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What two pAirs of numbers have the greatest common factor of of 4?
There is an infinity of pairs of numbers with a GCF of 4. If p and P are two distinct primes, then 4p and 4P are such a pair. There are other ways to construct such pairs, but one infinity should suffice.
Which of the pairs have gcf of 1?
The ones that are relatively prime, or co-prime.
Write the number 12 as the sum of two primes?
12=5+7
What are the factor pairs of 215?
The factor pairs of 215 are 1, 5, 43, and 215
What is the greatest common factor of 5 and 17?
They are both primes so the gcf is 1.
How many pairs of co-primes are there between 1 to 25?
There are for pairs of co-primes between 1 and 25. They are (3, 5), (5, 7), (11, 13), and(17, 19).
How many pairs of co primes are there between 1 to 50?
There are 731 pairs.
All co primes twin primes. True or false?
False. Co-primes are not the same as twin primes.Co-primes are any numbers having no common factorsother than 1. Examples of co-primes are 8 and 9 or 15 and 32.Twin primes are pairs of prime numbers exactly 2 apart such as 11 and 13 or 659 and 661.
Are 2 and 5 co-primes?
The numbers, 2 and 5, are co-primes because they both have just two factors, 1 and themselves.
How many pairs of coprime primes are there between 1 and 50?
All pairs of two primes are coprime. There are fifteen primes under 50. So that means there are 105 unique pairs of "coprime primes", or more generally, pairs of primes, under 50.
Two consecutive prime numbers which differ by 2 are said to be twin primes while two numbers whose hCF is 1 are called co-primes how many pairs of co-primes are between 1 and 50?
Any number greater than one can be co-prime. I guess the answer is 49.
Which of the following is a pair of co-primes?
5,7 3,5 are co-primes
What twin primes are pairs of prime number that differ by 2?
5 - 3 = 2
5 pairs of twin primes?
-3&5 -5&7 -11&13 -17&19 -29&31
How many pairs of primes are there?
it is infinite
Pairs of primes separated by a single number are called prime pairs?
Yes.
How many different pairs of prime numbers goes into 50?
There is only 1 pair of primes and they are 2*5.
