Find the number of ways in which four boys and four girls can be seated alternately in a row.

he number of ways in which 5 boys and 5 girls can be seated for a photograph so that no two girls sit next to each other is :

Number of ways in which 8 boys can sit in a circle

Number of ways in which is 8 boys can sit in a circle?

Find the numbers of ways in which 5 girls and 5 boys can be arranged in a row if no two boys are together.

A bag contains 6 white marbles and 5 red marbles. Find the number of ways in which four marbles can be drawn form the bag if they can be of any colour.

A bag contains 6 white marbles and 5 red marbles. Find the number of ways in which four marbles can be drawn form the bag if they must all be the same colour.

A bag contains 6 white marbles and 5 red marbles. Find the number of ways in which four marbles can be drawn form the bag if 2 must be white and 2 red.

Four boys picked 30 apples. The number of ways in which they can divide then if all the apples are identical is

Form the pair of linear equations in the following problems, and find their solutions graphically. : 10 students of Class X took part in a Mathematics quiz. If the number of girls is 4 more than the number of boys, find the number of boys and girls who took part in the quiz.