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An online store has (5) T-shirt colors, (4) sizes and (3) prints. How many T-shirt types are possible?

Answer and explanation

Correct answer: (60) types

The governing concept is the fundamental principle of counting. Each complete T-shirt type is determined by making one choice from each of three independent categories: color, size, and print. There are 5 choices for color. For every selected color, there are 4 possible sizes, giving 5 × 4 = 20 color-size combinations. Each of these combinations can be paired with any of the 3 prints. Therefore, the total number of distinct T-shirt types is 5 × 4 × 3 = 60, so option B is correct. Option A adds the category counts, option C omits the print choices, and option D is an incorrect product. Since all three features are required, all three factors must be multiplied.

Related tags

Fundamental Principle Of CountingProduct RulePermutations And CombinationsMathematicsClass 11 Mcq

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