17
lcm(9, 12) = 36; hcf(9, 12) = 3.
The LCM is: 34
The GCF/HCF of 34 and 170 is 34.
Write 100 and 120 in their prime compositions in power form: 100 = 223052 120 = 233151 For hcf, take lowest power of each prime across the compositions; for LCM, take highest powers: hcf = 223051 = 4 x 1 x 5 = 20 LCM = 233152 = 8 x 3 x 25 = 600
LCM(68, 102) = 204 HCF(68, 102) = 34
1394
It is: 34+7140 = 7174
The HCF is 2 The LCM is 986
48
LCM is 20 and the hcf is 10
To work this out, you first have to give the numbers as their prime factors: 6 = 2x3 34 = 2x17 The next step is to identify the HCF. In this case, the HCF is 2. Finally, you multiply the numbers together and divide by the HCF: 6x34/2 = 102
HCF = 3... LCM = 18 !
HCF is 60 and the LCM is 360
hcf is 1 and LCM is 35
HCF is 48 and LCM is 576
hcf = 42, lcm = 84.