find the hcf of 84,120,138 using divition method
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All the factors of 84 are 2 x 2 x 3 x 7
All the factors of 120 are 2 x 2 x 2 x 3 x 5
All the factors of 138 are 2 x 3 x 23
Common factors of 84, 120 and 138 are 2 x 3
Thus, the highest common factor of 84, 120 and 138 is 2 x 3
Hence, HCF of 84, 120 and 138= 3
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