To find the HCF you first need to break the numbers down into their prime factors. In this case we have:
30 = 2x3x5
45 = 3x3x5
The next step is to identify any common factors. In this case both numbers have 3 and 5 as prime factors. To find the HCF, multiply these together: 3x5 = 15.
To get the LCM, multiply the numbers together then divide by the HCF: 30x45/15 = 90.
What is the lcm of 20 and 45
3 and 30.
3 and 30
3 and 30
3 and 30
225 and 15, respectively.
What is the lcm of 20 and 45
The HCF is 1, the LCM is 720
hcf(14, 30) = 2 lcm(14, 30) = 210 14 = 2 x 7 30 = 2 x 3 x 5 hcf = 2 lcm = 2 x 3 x 5 x 7 = 210
360 is the LCM of 8, 30 and 45
6 and 10 2x3=6 2x5=10 HCF=2 LCM=30
3 and 30.
3 and 30
3 and 30
3 and 30
3 and 30
30 and 3.