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Subjects
Class 11MathematicsPermutations and CombinationsFundamental principle of countingEasy
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An online class offers 5 teachers and 4 time slots. How many ways can one teacher and one time slot be chosen?

Answer and explanation

Correct answer: 20 ways

Each of the 5 teachers can be paired with any of the 4 time slots. Thus, by the multiplication principle, there are 5 × 4 = 20 ways.

Related tags

Permutations-And-CombinationsFundamental-Principle-Of-CountingFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq
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