5 cars are to be parked in 5 parking slots. there are 3 red colour cars, 1 blue colour car and 1 green car. how many ways the car can be parked? Pick one:
A) 10 ways  B) 15 ways  C) 20 ways  D) 25 ways  E) 30 ways
total ways to park the cars having same colour =5!   but according to question ,there are 3 red cars,so no. of ways for parking   3 red cars=3!   and both blue &amp; green in 1 ways   so, 5!/1!*3!*1! = 20 ways   hence correct answer must be 20 ways.   ANSWER:20 ways
<result>C</result>
5 cars are to be parked in 5 parking slots. there are 3 red colour cars, 1 blue colour car and 1 green car. how many ways the car can be parked?