Question

The smallest fraction, which each of $\frac{6}{7},\frac{5}{14},\frac{10}{21}$ will divide exactly, is :

• A. 30/7
• B. 30/98
• C. 60/147
• D. 50/294
• E. None of these

Answer 1

The correct option is A

30/7

Required fraction = L.C.M. of $\frac{6}{7},\frac{5}{14},\frac{10}{21}=\frac{L.C.M.of6,5,10}{H.C.F.of7,14,21}=\frac{30}{7}$.