Question

At an election, 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 the voter votes for atleast one candidate, then the number of ways in which he can vote is

• A. 5040
• B. 6210
• C. 385
• D. 1110

Answer 1

The correct option is C

385

Required number of ways ${=}^{10}{C}_4{+}^{10}{C}_3{+}^{10}{C}_2{+}^{10}{C}_1=385$