In how many ways can a committee of 4 people comprising at least 3 boys be formed using a group of 5 boys and 6 girls?  Choices:  A) 67  B) 64  C) 65  D) 66  E) None of these
There are 2 options: the selected groups have no girls or one girls.   -First case: 1 girl + 3 boys: 6651 * 5653 = 6*10= 
<gadget id="calculator">6*10</gadget>
<output>60</output>
60   -Second case: 4 boys: 5654= 5   So there are  60 + 5= 
<gadget id="calculator"> 60 + 5</gadget>
<output>65</output>
65   ANS:65
<result>C</result>
In how many ways can a committee of 4 people comprising at least 3 boys be formed using a group of 5 boys and 6 girls?