Question

hcf of 42 , 63 , 140

Answer 1

Hcf of 42 , 63 and 1403


Factors of 42 63 140 that add up to numbers

Factors of 42 63 140 that add up to 96 

=1 + 2 + 3 + 6 + 7 + 14 + 21 + 42

Factors of 42 63 140 that add up to 3 

= 1 + 2

Factors of 42 63 140 that add up to 6 

= 1 + 2 + 3

Factors of 42 63 140 that add up to 12 

= 1 + 2 + 3 + 6

Factor of 42 63 140 in pairs

⇒ 1 x 42

⇒ 2 x 21

⇒ 3 x 14

⇒ 6 x 7

⇒ 7 x 6 

 

1 and 42 are a factor pair of 42 63 140 since

1 x 42= 42

2 and 21 are a factor pair of 42 63 140 since

2 x 21= 42

3 and 14 are a factor pair of 42 63 140 since 

3 x 14= 42

6 and 7 are a factor pair of 42 63 140 since 

6 x 7= 42

7 and 6 are a factor pair of 42 63 140 since 

7 x 6= 42

Factors =1, 2, 3, 6, 7, 14, 21, 42

Answer 2

42=2×3×7
63=3×3×7
140=2×2×5×7
HCF=7