The GCF is 70.The GCF is 70.
20
hcf(490, 1750) = 70 Using factorisation: 490 = 2 x 5 x 7² 1750 = 2 x 5³ x 7 hcf = 2 x 5 x 7 = 70
140, 210, 280, 350, 420, 490, 560, 630, +70 . . .
490
The GCF is 70.The GCF is 70.
The GCF is 70.
the answer is 49
The GCF is 70.
Factor them both. 2 x 5 x 7 x 7 = 490 2 x 2 x 2 x 5 x 7 + 280 Find the factors in common. 2 x 5 x 7 = 70, the HCF
The highest common factor of the numbers 490 and 630 is 70.
20
5
28
140, 280, 490, yes. 230, 330, 610, no.
HCF(140, 490) = 70 So 70 and any factor of 70 will do.
Their HCF is 8