In a group of 4 boys and 6 girls, four children are to be selected. In how many different ways can they be selected such that at least one girl is included?	Choose the correct choice.
A) 185 B) 197 C) 209 D) 221 E) 233
The total number of ways to choose 4 children is 10C4 = 210   The number of ways to choose only boys is 4C4 = 1   The number of groups which include at least one girl is 209.   The answer is 209.
<result>C</result>
In a group of 4 boys and 6 girls, four children are to be selected. In how many different ways can they be selected such that at least one girl is included?