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Subjects
Class 11MathematicsPermutations and CombinationsFundamental principle of countingEasy
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A password is made by choosing one of (3) letters first and then one of (4) digits. How many passwords are possible?

Answer and explanation

Correct answer: (12)

The first stage has (3) choices and the second has (4), so (3\times4=12). Fill password positions in order.

Related tags

Permutations And CombinationsCounting PrinciplePasswordFundamental Principle Of CountingMathematicsClass 11 Mcq
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