In a class of 30 students, there are 17 girls and 13 boys. If a student is chosen at random, what is the probability of choosing a girl?

There are 13 girls and 15 boys in a line. If one student is chosen at random, then find the probability that he is a boy.

There are 13 girls and 15 boys in a line . If one students is chosen at random , then the probability that he is not a boy is .

In a Mathematics class of 30 students, 17 are boys and 13 are girls. On a unit test, 4 boys and 5 girls made an A grade. If a student is chosen at random from the class, what is the probability of choosing a girl or an 'A grade student'?

In a class of 50 students, 20 are boys and rest are girls. A student is selected at random. Find the probability of selecting a boy.

In a class of 50 students, 20 are boys and rest are girls. A student is selected at random. Find the probability of selecting a boy.

A class has 20 girls and 16 boys. One student is selected at random. Find the probability that the student is a girl.

The table above shows the distribution of the gender and the language studied of the 30 students in an after-school language program. If a student is chosen at random, what is the probability that the student will be either a boy studying French or a girl studying Spanish?

There are 35 students in a class of whom 20 are boys and 15 are girls. From these students one is chosen at random. What is the probability that the chosen student is a (i) boy, (ii) girl?

In a class there are 17 boys and 13 girls . In another class there are 15 boys and 12 girls. What is the probability of selecting a girl from all students from both the classes.