Five persons enter the lift of a seven storey building at the ground floor. In how many ways can they get out of lift on any floor other than ground floor
Options:	A) 720	B) 1296	C) 1540	D) 7776	E) 360
Each person out of 5 has 6 floors (options) to get out of (since no one gets out on the ground floor), hence total ways is 6*6*6*6*6=6^5= 7776   Answer: 7776.
<result>D</result>
Five persons enter the lift of a seven storey building at the ground floor. In how many ways can they get out of lift on any floor other than ground floor