Show that the number of ways in which p positive and n negative signs may be placed in a row so that no two negative signs shall be together is ` (p+1)C_n`.

Number of ways in which 5 plus (+) signs and 5 minus (-) signs be arranged in a row so that no two minus signs are together is

The number of ways in which 5 boys and 3 girls can be seated in a row, so that no two girls sit together is

Find the number of ways in which 5 boys and 3 girls can be seated in a row so that no two girls are together.

The number of ways in which m+n(nlem+1) different things can be arranged in a row such that no two of the n things may be together, is

The total number of ways in which six '+' and four '-' signs can be arranged in a line such that no two signs '-' occur together, is ……….. .

Find the total number of ways in which six '+' and four '-' signs can be arranged in a line such that no two '-' signs occur together.

In how many ways can 8 stars (**) signs and 6 triangle (Delta ) signs be placed in a row so that no two triangle sign are together ?

In how many ways can 7 plus (+) and 5 minus (-) signs be arranged in a row so that no two minus (-) signs are together?

The number of ways of arranging m positive and n(lt m+1) negative signs in a row so that no two are together is a.= ^m+1p_n b.= ^n+1p_m = c.= ^m+1c_n ="" d.= ^n+1c_m

Number of ways in which 15 different books can be arraged on a shelf so that two particular books shall not be together is