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Subjects
Class 11MathematicsPermutations and CombinationsFundamental principle of countingHard
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A URL code has (3) lowercase letters and (2) symbols. Letters do not repeat, and symbols are placed in two distinct positions from (4) available symbols. How many codes are possible?

Answer and explanation

Correct answer: (468000)

The three letters have (26 \times 25 \times 24) choices. The two symbol positions have (4 \times 4) choices.

Related tags

PermutationsCombinationsCountingHardFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq
सुधार सुझाएँ / Earn

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