Question

A room has 5 doors and 4 windows in how many ways a robber enter and leave the room

Answer 1

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Here is the solution:

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Number of ways to get in = 5 + 4 = 9

Number of ways to get out = 5 + 4 = 9

Total number of combination to get in and out = 9 x 9 = 81

Answer: There are 81 different ways to get in and out of the room