Question
There are 5 doors to a lecture room. The number of ways that a student can enter the room and leave it by a different door is
Answer: Option A
:
A
A student can enter the room in 5 ways but he can leave the room in 4 ways.
The total number of ways in which this can be done = 5 × 4 = 20
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:
A
A student can enter the room in 5 ways but he can leave the room in 4 ways.
The total number of ways in which this can be done = 5 × 4 = 20
Was this answer helpful ?
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