A company has 2 directors and 5 managers. How many different committees with 5 people can be chosen having at least 1 director?
Choose the correct choice from the following options.
A) 500	B) 720	C) 4500	D) 20	E) 55
atleast one means exactly one and more than one.   different committees with 5 people can be chosen having at least 1 director is   (2c1*5c4) + (2c2*5c3) = 20;   Hence 20.
<result>D</result>
A company has 2 directors and 5 managers. How many different committees with 5 people can be chosen having at least 1 director?