Q. 175.0( 2 Votes )
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?
Answer :
Given: 36 teachers are there in a school.
To find: Number of ways in which one principal and one vice-principal can be appointed.
There are 36 options of appointing principal and 35 option of appointing vice-principal since same teacher cannot be appointed as principal and vice-principal.
Total number of ways=36 × 35=1260
Rate this question :
Circular permutations61 mins
Permutations & Combinations | Analyze your learningFREE Class
Challenging Quiz on P&C | Test Yourself55 mins
Lecture on Combinations49 mins
Interactive Quiz on Division and distribution of objects17 mins
Check Your progress Part 2| Interactive Quiz: Permutation & Combination54 mins
Understand Permutations like never before60 mins
Lets see how good you can manage numbers | P&C Quiz Challenge41 mins
Ladoo Bhikhari Concept46 mins
Indepth Understanding of Factorials56 mins
Find the number of ways in which one can post 5 letters in 7 letter boxes.
RD Sharma - MathematicsIn how many ways can 7 letters be posted in 4 letter boxes?
RD Sharma - MathematicsIn how many ways can 5 different balls be distributed among three boxes?
RD Sharma - MathematicsIn how many ways can 5 letters be posted in 4 letter boxes?
RS Aggarwal - MathematicsIn how many ways 6 rings of different types can be worn in 4 fingers?
RS Aggarwal - MathematicsIn how many ways can the following prizes be given away to a class of 20 students :first and second in mathematics; first and second in chemistry; first in physics and first in English?
RS Aggarwal - Mathematics