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.Management Sciences
A. 30/7
B. 30/98
C. 60/147
D. 50/294
Explanation:
Required fraction = L.C.M of 6/7, 5/14, 10/21
= (L.C.M of 6, 5, 10) / (H.C.F of 7, 14, 21) = 30/7
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