From a group of 14 astronauts that includes 5 people with previous experience in space flight, a 3-person crew is to be selected so that exactly 1 person in the crew has previous experience in space flight. How many different crews of this type are possible?
Choose the correct option:
A) 175 B) 190 C) 165 D) 180 E) 200
number of astronauts with previous experience = 5   Remaining =9   we need to pick exactly one from the first group   and 2 from the second group   (5C1)*(9C2)   =5*36= 
<gadget id="calculator">5*36</gadget>
<output>180</output>
180   Answer : 180
<result>D</result>
From a group of 14 astronauts that includes 5 people with previous experience in space flight, a 3-person crew is to be selected so that exactly 1 person in the crew has previous experience in space flight. How many different crews of this type are possible?