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Q.

There is a building of 6 floors. Four people enter the lift on the ground floor. Each of them can leave the cabin on any of the six floors beginning with the first floor. In how many ways they can leave the lift.


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a

46

b

2420

c

64

d

24 

answer is C.

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Detailed Solution

It has been revealed to us that there is a six-story building. Four individuals board the elevator on the ground floor. Any of the six floors, starting with the first, can be used by any of them to exit the cabin.
The variety of ways they can exit the elevator must be determined.
We have four people in total.
There are six floors.
There are now six ways for each person to exit the lift because exiting is not restricted.
Since there are 4 people, option 3 is the correct response because there are 64 possible ways for them to exit the elevator.
Hence option 3 is correct.
 
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