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Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random.

 Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5?


(A) 2/3


(B) 3/6


(C) 8/15


(D) 9/20


(E) None of these


d

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It takes 10 days for digging a trench of 100 m long, 50 m broad and 10 m deep. What length of trench, 25 m broad and 15 m deep can be dug in 30 days ?

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