Jake, Lena, Fred, John and Inna need to drive home from a corporate reception in an SUV that can seat 7 people. If only Inna, Lena or Jake can drive, how many seat allocations are possible?
Choose the correct choice from the following answers.
A) 30 B) 42 C) 120 D) 360 E) 1080
5 people ,7 seats, only 3 can drive   if inna is in one seat remaining, 4 people can be arranged in 4p4 i.e 4! =24 ways   since any one can drive total ways = 24 *3= 
<gadget id="calculator">24 *3</gadget>
<output>72</output>
72 ways   4 seats can be chosen out of remaining 6 seats in 6c4 ways= 6!/(4!*2!)= 15 ways     72*15= 
<gadget id="calculator">  72*15</gadget>
<output>1_080</output>
1080   1080
<result>E</result>
Jake, Lena, Fred, John and Inna need to drive home from a corporate reception in an SUV that can seat 7 people. If only Inna, Lena or Jake can drive, how many seat allocations are possible?