There are some boys and girls in a room. The square of the number of girls is less than the square of the number of boys by 28. If there were two more girls, the number of boys would have been the same as that of the girls. The total number of boys and girls in the room is (a) 7 (b) 10 (c) 14 (d) 56
In a class there are 16 boys and 9 girls. The teacher wants to select either a boy a girl as a class representative. In how many ways can the teacher make the selection?
In a class there are 20 boys and 15 girls. In how many ways can 2 boys and 2 girls be selected?
There are 30 boys and 20 girls in a class. The ratio of the number of girls to the number of boys is
In a class , there are 15 boys and 10girls / three students are selected at random . The probability that I girl and 2 boys are selected , is ,
In a class, there are 10 boys and 8 girls. When 3 students are selected at random, the probability that 2 girls and 1 boy are selected, is
There are 1550 boys and girls in a school. The number of girls exceeds the number of boys by 500. What is the percentage (to nearest integer) of girls in the school?
There are 1550 boys and girls in a school. The number of girls exceeds the number of boys by 500. What is the percentage (to nearest integer) of girls in the school ?
