Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  CBSE XI  >>  Math  >>  Permutations and Combinations
0 votes

There are 10 professors and 20 lecturers out of whom a committee of 2 professors and 3 lecturers is to be formed. In how many ways can a committee be formed?

$\begin{array}{1 1}(A)\;20C_3\times 10C_2\\(B)\;10C_3\times 5C_2\\(C)\;15C_3\times 5C_2\\(D)\;\text{None of these}\end{array} $

Can you answer this question?

1 Answer

0 votes
  • $C(n,r)=\large\frac{n!}{r!(n-r)!}$
The no of ways the committee can be formed =$20C_3\times 10C_2$
Hence (A) is the correct answer.
answered May 19, 2014 by sreemathi.v

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App