2 is a hcf of
a)64,18
b)72,144
c)10,12
d)36,84
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c) 10 , 12 is hcf of 2
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To find the HCF, factorize all the numbers as given below
64 - 2 x 2 x 2 x 2 x 2 x 2
18 - 2 x 3 x 3
HCF is 2
72 - 2 x 2 x 2 x 3 x 3
144 - 2 x 2 x 2 x 2 x 3 x 3
HCF = 2 x 2 x 2 x 3 x 3 = 72
10 - 2 x 5
12 - 2 x 2 x 3
HCF is 2
36 - 2 x 2 x 3 x 3
84 - 2 x 2 x 3 x 7
HCF = 2 x 2 x 3 = 12
Hence, 2 is the HCF of 64, 18 and 10, 12
64 - 2 x 2 x 2 x 2 x 2 x 2
18 - 2 x 3 x 3
HCF is 2
72 - 2 x 2 x 2 x 3 x 3
144 - 2 x 2 x 2 x 2 x 3 x 3
HCF = 2 x 2 x 2 x 3 x 3 = 72
10 - 2 x 5
12 - 2 x 2 x 3
HCF is 2
36 - 2 x 2 x 3 x 3
84 - 2 x 2 x 3 x 7
HCF = 2 x 2 x 3 = 12
Hence, 2 is the HCF of 64, 18 and 10, 12
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