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In a building with (8) doors, different doors are chosen for entry and exit. A third door, different from both, is chosen for emergency exit. Order matters. How many ways are possible?

Answer and explanation

Correct answer: (8 \times 7 \times 6=336)

The three roles are different, so the choices are (8,7,6). When roles have different names, order matters.

Related tags

CountingDoorsRolesFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq

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