A parking space have 5 different slots. 5 cars has to arrange in 5 slots. But there are exactly 3 cars between 2 specified cars. In how many ways cars can be arranged?
Answers:
A) 10	B) 12	C) 14	D) 15	E) 16
we arranged 2 specified cars in 2 slots = 2!   remaining 3 cars in 3 slots = 3!   number of ways = 2!*3! = 12   correct option is 12
<result>B</result>
A parking space have 5 different slots. 5 cars has to arrange in 5 slots. But there are exactly 3 cars between 2 specified cars. In how many ways cars can be arranged?