7 gentlemen and 3 gentlewomen are candidates for 2vacancies. A voter has to vote for 2 candidates. In how many ways can one cast his vote?  Answers:
A) 41	B) 42	C) 45	D) 46	E) 47
There are 10 candidates and a voter has to vote for any two of them.   So, the required number of ways is,   = 10C2 = 45.   45
<result>C</result>
7 gentlemen and 3 gentlewomen are candidates for 2vacancies. A voter has to vote for 2 candidates. In how many ways can one cast his vote?