The product of 13 x 3 is 39
1x52, 2x26, 3x13
3x13=39
13. 3x13=39. 39/3=13
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.
17
39
1x52, 2x26, 3x13
3 x 13 = 39
3x13 39x1
3x13=39
3x13=39
I'm sure it's composite, 3x13=39
13. 3x13=39. 39/3=13
3 is a prime number. 13 is a prime number. 3 x 13 cannot be prime.
33 (3x11) 39 (3x13) 51 (3x17)
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.
3 because they are all in multiples of 3 3x4 and 3x13