1.

`(14)/(19)xx(57)/(70)xx(20)/(21)=?`A. `(2)/(7)`B. `4/7`C. `2/9`D. `3/7`

Answer» Correct Answer - B
`?=(14)/(19)xx(57)/(70)xx(20)/(21)=(2)/(1)xx(3)/(10)xx(20)/(21)=(2)/(1)xx(1)/(1)xx(2)/(7)=(4)/(7)`


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