Find the number of ways in which four particular persons A, B, C, D and six more persons can stand in a queue so that A always stands before B, B before and C before D.

Find the number of ways in which four persons can sit on six chairs.

In how many ways can 6persons stand in a queue?

In how many ways can 6persons stand in a queue?

In how many ways can 6 persons stand in a queue?

5 persons A, B, C, D and E are in a queue of a shop. The probability that A and E always occur together, is

Find the number of ways to give 16 different things to three persons A,B,C so that B gets 1 more than A and C gets 2 more than B .

Find the number of ways of arranging six persons (having A,B,C and D among them) in a row sothat A,B,C and D are always in order ABCD( not necessarily together).

Let n be the number of ways in which 5 boys and 5 girls can stand in a queue in such a way that all the girls stand consecutively in the queue.Let m be the number of ways in which 5 boys and 5 girls can stand in a queue in such a way that exactly four girls stand consecutively in the queue.Then the value of m/n is

Let n be the number of ways in which 5 boys and 5 girls can stand in a queue in such a way that all the girls stand consecutively in the queue.Let m be the number in which 5 boys and 5 girls stand in such a way that exactly four girls stand consecutively in the queue. Then the value of (m)/(n) is

The number of ways in which 7 persons can sit around a rond table is (A) 720(B) 360(C) 240 (D) 5040