Question

Find the HCF of the following numbers.
(a) 20 and 30 ​

Answer 1

Step-by-step explanation:

20=4×5=2×2. 30=5×6=2×3

20=2×2×5. 30=2×3×5

Answer 2

Answer:

H.C.F of 20 is and 30 is = 180

Step-by-step explanation:

Factor of 20 = 20, 40, 60, 80, 100, 120, 140, 160, 180 , 200

Factor of 30= 30, 60, 90, 120, 150 , 180 , 210, 240, 270 , 300

Common multiples =60 ,120, 180

H.C.F of 20 and 30 is = 180