Jake, Lena, Fred, John and Inna need to drive home from a corporate reception in an SUV that can seat 6 people. If only Inna or Jake can drive, how many seat allocations are possible?  Choose the correct answer:	A) 30	B) 42	C) 120	D) 240	E) 720
5 people ,6 seats, only 2 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 *2= 
<gadget id="calculator">24 *2</gadget>
<output>48</output>
48 ways   4 seats can be chosen out of remaining 5 seats in 5c4 ways= 5!/(3!*2!)= 5 ways     48*5= 
<gadget id="calculator">  48*5</gadget>
<output>240</output>
240   240
<result>D</result>
Jake, Lena, Fred, John and Inna need to drive home from a corporate reception in an SUV that can seat 6 people. If only Inna or Jake can drive, how many seat allocations are possible?