Ask Questions, Get Answers

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

At an electron,a voter may vote for any number of candidates not greater than the number to be elected.There are 10 candidates and 4 are to be elected.If a voter votes for atleast for atleast one candidate,then the number of ways in which he can vote is

$\begin{array}{1 1}(A)\;6210\\(B)\;385\\(C)\;1110\\(D)\;5040\end{array} $

Can you answer this question?

1 Answer

0 votes
Total number of ways :-
$\Rightarrow 10C_1+10C_2+10C_3+10C_4$
$\Rightarrow 10+45+120+210$
$\Rightarrow 385$
Hence (B) is the correct answer.
answered Jun 20, 2014 by sreemathi.v

Related questions

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