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A room has 8 doors. In how many ways, a man can enter in the room through one door and exit through a different door?
  • a)
    5040
  • b)
    40320
  • c)
    56
  • d)
    8
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
A room has 8 doors. In how many ways, a man can enter in the room thro...
The person has 8 options to enter the hall. For each of these 8 options, he has 7 options to exit the hall. Thus, he has 8 × 7 = 56 ways to enter and exit from different doors.
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A room has 8 doors. In how many ways, a man can enter in the room thro...
If he enters through 1 door he can exit through th
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A room has 8 doors. In how many ways, a man can enter in the room through one door and exit through a different door?a)5040b)40320c)56d)8Correct answer is option 'C'. Can you explain this answer?
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