Find the number of ways in which five friends sit in seven vacant seats in a bus ?

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

Find the number of ways in which 6 boys and 6 girls can be seated in a row so that all the girls sit together and all the boys sit together.

Find the number of ways in which 6 boys and 6 girls can be seated in a row so that all the girls sit together and all the boys sit together.

Find the number of ways in which 6 boys and 6 girls can be seated in a row so that all the girls sit together and all the boys sit together all the girls are never together.

Let m be the number of ways in which 'f' number of friends visit seven different wonders such that every friend visit at least one wonder. Let n be the number of ways in which all ' f ' friends visit exactly same two wonders.If (n)/(m)=((21)/(127)^(4)) then value of ' f ' is.

The number of ways in which 5 ladies and 7 gentlemen can be seated in a round table so that no two ladies sit together, is

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

Find the number of ways in which 5 boys and 5 girls be seated in a row so that all the girls sit together and all the boys sit together

Find the number of ways in which 4 boys and 4 girls be seated in a row so that, (i) No two girls may sit together. (ii) All the girls sit together and all the boys sit together.

Find the number of ways in which 10 girls and 90 boys can sit in a row having 100 chairs such that no girls sit at then either end of the rwo and between any two girls, at least five boys sit.