672 and 12, respectively.
hcf = 42, lcm = 84.
84 and 14, respectively.
672
672
First you express the numbers as the product of their prime factors: 28 = 2x2x7 21 = 3x7 Next you find the HCF. In this case, the HCF is 7. Finally, you multiply the numbers together and divide by the HCF. 28x21/7 = 84 Therefore the LCM of 28 and 21 is 84.
HCF(10, 84) = 2 HCF(10, 84) = 2 HCF(10, 84) = 2 HCF(10, 84) = 2
The LCM is 672
LCM is 20 and the hcf is 10
12 24 36 48 60 72 84 96 32 64 96 96
HCF = 3... LCM = 18 !
HCF is 60 and the LCM is 360
The HCF is: 2The LCM is: 2,520