How many different ways can you select a pilot and a co pilot if you have 40 people to choose from?  Options
A) 199 B) 200 C) 398 D) 4950 E) 1560
You are not just choosing two from 40. Each of the two people chosen fills a particular slot. The first filling the pilot slot and the second filling the copilot slot is different from the first filling the copilot slot and the second filling the pilot slot.   So the answer is in a sense (40C2) x 2 = 1560=1560
<result>E</result>
How many different ways can you select a pilot and a co pilot if you have 40 people to choose from?