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A message template has (5) greetings (3) main sentences and (4) closing sentences. How many messages can be formed?

Answer and explanation

Correct answer: 60

To form one message, choose 1 of the 5 greetings, 1 of the 3 main sentences, and 1 of the 4 closing sentences. By the fundamental principle of counting, the total number of messages is \(5 \times 3 \times 4=60\). An option such as 45 does not account for multiplication across all independent choices. Exam tip: multiply the numbers of choices when selections are made successively and independently.

Related tags

Fundamental Principle Of CountingPermutations And CombinationsClass 11 MathematicsCounting PrincipleProduct RuleMathematicsClass 11 Mcq

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