hcf(324, 512) = 4 324 = 2² x 3⁴ 512 = 2⁹ hcf = 2² = 4
Prime factors of 36 are: 2^2 and 3^2 Prime factors of 144 are: 2^4 and 3^2 Prime factors common to both number are 2^2 and 3^2 which when multiplied equals 36 making it the HCF
The GCF is 42.
The GCF is 18.
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
hcf(324, 512) = 4 324 = 2² x 3⁴ 512 = 2⁹ hcf = 2² = 4
factors of 8: 1, 2, 4, 8 factors of 18: 1, 2, 3, 6, 9, 18 HCF: 2
Prime factors of 36 are: 2^2 and 3^2 Prime factors of 144 are: 2^4 and 3^2 Prime factors common to both number are 2^2 and 3^2 which when multiplied equals 36 making it the HCF
The GCF is 42.
3 and 30.
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
18 = 2 x 3 x 3 99 = 3 x 3 x 11 So hcf = 3 x 3 = 9
686 = 2 x 343 1029 = 3 x 343 HCF is 343
3.
It is: 18
Factors of 18 are 3,3,& 2. Factors of 21 are 3 & 7 One lot of '3' is common to both so '3' is the HCF.
The GCF is 2.