From among the 36 teachers in a school, one principal and one vice principal are to be appointed. In how many ways can this be done?

Out of 36 teachers in a school one principal and one vice principal has been selected.In how many ways this can be done?

From among the 36 teachers in a college, one principal, one vice-principal and the teacher-incharge are to be appointed. In how many ways can this be done?

From among the 36 teachers in a college,one principal,one vice-principal and the teacher- incharge are to be appointed.In how many ways can this be done?

Four books, one each in Accounting, Audit, Economics and Mathematics are to be arranged on shelf. In how many ways can this be done?

Four books, one each in Chemistry, Physics, Biology and Mathematics, are to be arranged in a shelf. In how many ways can this be done ?

In a college there are altogether 20 professors including the principal and vice principal from whom a committee of five is to be appointed. Find how many committees will contain the principal and vice principal.

Four books, one each in Chemistry, Physics, Biology and Mathematics, are to be arranged in a shelf. In how many ways can this be done?

Four books, one each in Chemistry, Physics, Biology and Mathematics are to be arranged in a shelf. In how many ways can this be done?

The math team at East High has 20 members .They want to choose a president , vice president, and treasurer . In how many ways can this be done ?