A room has 10 doors. In how many ways can a man enter the room by one door and come out by a different door.
CA Foundation · Quantitative Aptitude · MTP · June 2024
A room has 10 doors. In how many ways can a man enter the room by one door and come out by a different door.
Suggested Answer and Working Notes:
Correct Answer: Option (A)
A. 90
Topics: Part-A: Business Mathematics
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