Menti Girls v/s Boys special

The set of girls in a boys school is :

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

Statements: Some sons are boys All girls are sons No daughter is boy Conclusions: (i) All daughter are sons is a possibility (ii) Some daughters are ont sons (iii) All girls are boys is a possibility (iv) Some sons not daughters (v) Some boys are girls is definitely true

In a class,there are 15 boys and 10 girls.Three students are selected at random,Find the probability that one girl and two boys are selected

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 ,

There are 20 girls and 15 boys in a class. What is the ratio of number of girls to the number of boys?