They are: 15 and 1 respectively
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hcf(5, 15) = 5 lcm(5, 15) = 15.
The GCF is 3. The LCM is 120.
18 = 2 * 3 * 370 = 2 * 5 * 7Thus:LCM = 2*3*3*5*7 = 630HCF = 2
hcf(300, 525) = 75 lcm(300, 525) = 2100 Using prime factorization: 300 = 2² x 3 x 5² 525 = 3 x 5² x 7 hcf = 3 x 5² = 75 lcm = 2² x 3 x 5² x 7 = 2100
4