2 x 5 x 7 x 11
2 x 3 x 5 x 7 x 11 = 2310.
720720 Prime factorised in power format: 2 = 2 3 = 3 4 = 2² 5 = 5 6 = 2 x 3 7 = 7 8 = 2³ 9 = 3² 10 = 2 x 5 11 = 11 12 = 2² x 3 13 = 13 14 = 2 x 7 15 = 3 x 5 16 = 2⁴ lcm = 2⁴ x 3² x 5 x 7 x 11 x 13 = 720720
The HCF of 165 and 210 is 15. The LCM is 2310.
35. 350 = 2 x 52 x 7 385 = 5 x 7 x 11 hcf = 5 x 7 = 35
2, 5, 7 and 11
2 x 5 x 7 x 11
2 x 2 x 5 x 7 x 11 = 1540
2 x 3 x 5 x 7 x 11 = 2,310
38,500 = 2 x 2 x 5 x 5 x 5 x 7 x 11 or 22 x 53 x 71 x 111
2 x 3 x 5 x 7 x 11 = 2310.
2 x 2 x 7 x 7 x 7 = 1372
The prime factorisation of 15400 is 2 x 2 x 2 x 5 x 5 x 7 x 11 or 23 x 52 x 7 x 11.
5 x 11 = 55 2 x 5 x 7 = 70 2 x 5 x 7 x 11 = 770, the LCM
2 x 2 x 3 x 5 x 7 x 7
Factor them. 2 3 2 x 2 5 2 x 3 7 2 x 2 x 2 3 x 3 2 x 5 11 Combine the highest amount of each factor. 2 x 2 x 2 x 3 x 3 x 5 x 7 x 11 = 27720, the LCM
720720 Prime factorised in power format: 2 = 2 3 = 3 4 = 2² 5 = 5 6 = 2 x 3 7 = 7 8 = 2³ 9 = 3² 10 = 2 x 5 11 = 11 12 = 2² x 3 13 = 13 14 = 2 x 7 15 = 3 x 5 16 = 2⁴ lcm = 2⁴ x 3² x 5 x 7 x 11 x 13 = 720720