1 and 3
1 and 5
To find the HCF of two numbers, you have to break them down into their prime factors: 15 = 3x5 5 = 5 The next step is to identify any common factors. Both numbers have a 5 as a prime factors. Therefore the HCF of 15 and 5 is 5.
255
No, they are composite numbers. The factors of 15 are 1, 3, 5, and 15. The factors of 33 are 1, 3, 11, and 33. Prime numbers have two factors: 1 and the number itself, so 15 and 33 cannot be prime.
15 and 30 have those factors.
There are no common factors of 15 because there cannot be common factors without two or more numbers to compare. Common factors are factors that the numbers being compared have in common.The factors of 15 are 1, 3, 5, and 15.Examples:The common factors of 6 and 15 are 1 and 3.The common factors of 15 and 90 are 1, 3, 5, and 15.1,5,3, and 15.
Since 3 and 5 are both prime numbers, the only common factor of the two numbers is 1. Perhaps you are thinking of common multiples, the first two common multiples of the two numbers are 15 and 30.
4 and 15 are both composite numbers because they both have more than two factors.
The factors of 10 are: 1, 2, 5, 10The factors of 15 are:1, 3, 5, 15The common factors are: 1, 5
The factors of 15 are 1, 3, 5, and 15 .The factors of 75 are 1, 3, 5, 15, 25, and 75 .The common factors ... numbers that are factorsof both 15 and 75 ... are 1, 3, 5, and 15 .
Any numbers being multiplied by each other are called factors. The solution to a multiplication problem is called a product. Because of the commutative property of multiplication both numbers being multiplied together are called "factors." This is why - 3 x 5 = 15 5 x 3 = 15 It doesn't matter the order of the 3 or the 5. They are both called factors, and the product is the answer, 15.
To find the HCF of two numbers you first have to express them as a product of their prime factors. In this case: 15 = 3x5 39 = 3x13 The next step is to identify any common prime factors. In this case, both numbers have 3 as a prime factor. Therefore the HCF of 15 and 39 is 3.