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An event invitation can be made using one of 4 card designs and one of 9 envelope colors. How many different card-and-envelope combinations are possible?

Answer and explanation

Correct answer: 36 ways

The multiplication principle applies because each card design can be paired with any of the 9 envelope colors. Thus, the number of combinations is 4 × 9 = 36.

Related tags

Fundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq

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