Question

find out the HCF42,63,105​

Answer 1

HCF of 42 , 63, 105= 21 answer

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Answer 2

$42 ...63...105 \\ 6....9...15(by \: 7) \\ 2...3...5(by3) \\ \\ so \: the \: hcf \: is \: 7 \times 3 = 21$