A man want to buy 2 cars. If there are 10 cars that satisfy the man's criteria,in how many different ways can the man select the 2 cars if the order of selection doesn't matter.
Pick one
A) 54
B) 120
C) 32
D) 210
E) 45
The number of ways of choosing 2 cars out of 10 are counted by = 10C2 ways = 45   Answer: Option 45
<result>E</result>
A man want to buy 2 cars. If there are 10 cars that satisfy the man's criteria,in how many different ways can the man select the 2 cars if the order of selection doesn't matter.