Question

4/9, 10/21 an 20/63?​
A. 4/189
B. 6/63
C. 2/63
D. 20/21

Answer 1

Step-by-step explanation:

H.C.F of 4/9, 10/21 and 20/63 = H.C.F of 4,10 and 20 / L.C.M of 9,21 and 63

= H.C.F of 4, 10 and 20 = 2 &

L.C.M. of 9, 21 and 63 = 63.

Required H.C.F. = 2/63

So C is a correct option 2/63