Question

3/4×2/7×1/2...........

Answer 1

3/4 x 2/7 x 1/2
= (3 x 2 x 1) / (4 x 7 x 2)
= (3 x 1) / (4 x 7)
= 3 / 28

Answer 2

3 .  2   .  1
4     7     2

=  3
   28