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).

The number of ways of arranging six person (having A, B, C and D among them) in a row so that A, B, C and D are always in order ABCD (not necessarily together) is

The number of ways of arranging seven persons (having A,B,C and D among them) in a row so that A,B,C and D are always in order A-B-C-D (not necessarily together) is (A) 24 (B) 5040 (C) 210 (D) 720

The number of ways of arranging seven persons (having A,B,C and D among them) in a row so that A,B,C and D are always in order A-B-C-D (not necessarily together) is (A) 24 (B) 5040 (C) 210 (D) 720

The number of ways of arranging six + signs and four - signs in a row so that no two - signs occur together is

Find the number of ways of arranging the letters of the word SPECIFIC. In how many of them the two C's come together

The number of ways of arranging the letters A A A A A,BBB,C C C,D,E E& F in a row if the letter C are separated from one another is:

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.