A school has three gates and four staircases from the first floor to the socond floor. How many ways does a student have to go from outside the school to his classroom on the second floor?

A question paper has 6 questions. How many ways does a student have to answer if he wants to solve at least one question?

There are four bus routes between A and B and three bus routes between B and C. In how many ways can a man travel by bus from A to C via B?

Suppose there is a co-education school having 60% boys and 40% girls as students. The girl students have secured first class and second class in equal numbers and all boys secrured first class. A teacher selects a student at random and verifies the result. teacher observes thata student has secured first class in the examination. What is the probability that the student is a girl?

A question paper has two sections. section I has 5 questions and section II has 6 questions. A student must answer at least two question from each among 6 questions he answers. How many different coices does the student have in choosing question?

Answer the following questions: In the following case, state giving reasons whether the work done is positive or negative: Activity: A boy goes from the first floor to the third floor with his school bag. Force: The force applied by the boy.

A question paper has two parts, A and B, each containing 10 questions. If a student has to choose 8 from part A and 5 from part B, In how many ways can he choose the questions