Human Psychology | Boys eyes slip when they see other girls

Psychology generally deals with human

There are some students in an auditorium, some of them are dressed in white and the others are drcssed in bluc. The ratio of the number of boys dressed in white to the number of girls dressed in blue is 4 : 3 and the ratio of the total number of girls dressed in white to the number of boys dressed in blue is 4 : 5 . The ratio of the total number of boys and girls dressed in white to the total number of boys and girls dressed in blue is 12 : 13 . Find the ratio of the total number of boys to that of girls in the auditorium.

A boy and a girl are playing in a park. The only daughter of the maternal grandfather of the girl, is the sister of the boy's father. How is the boy related to the girl ?

In a chess competition involving some boys and girls of a school every student has to play exactly one game with every other student. It was found that in 45 games both the players were girls and in 190 games both were boys. The number of games in which one player was a boy and the other was a girl is

In a chess competition involving some boys and girls of a school, every student had to play exactly one game with every other student. It was found that in 45 games both the players were girls and in 190 games both were boys. The number of games in which one player was a boy and the other was a girl is

In humans blue eye colour is recessive to brown eye colour. If a boy has brown eyes and mother blue-eyed, what would be phenotype of father ?