Factorisation #!#Girls vs Boys

In a class of 49 students, the ratio of girls to boys is 4:3. If 4 girls leave the class, the ratio of girls to boys would be

A boy introduced a girl as the daughter of the son of the mother of his aunt. The girl is boy's:

A boy and a girl are facing each other. If the boy is standing at the North-West direction of the girl, in which direction is the girl to the boy?

In a group of boys and girls , 15 girls left the group , the ratio boys and girls becomes 2:1 . If after , 45 boys left the group , the ratio become 1 :5 Initially ,how many girls were there in the group ?

In a classroom, one-fifth of the boys leave the class and the ratio of the remaining boys to girls is 2:3. If further 44 girls leave the class, the ratio of boys to girls is 5:2. How many more boys should leave the class so that the number of boys equals that of girls ?

In a school having roll strength 286, the ratio of boys and girls is 8: 5. If 22 more girls get admitted into the school, the ratio of boys and girls becomes

Six boys and six girls sit in a row randomly. Find the probability that (i) the six girls sit together,(ii) the boys and girls sit alternately.