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A uniform has (3) shirt options (2) trouser options and (4) shoe options. In how many ways can a complete uniform be made?

Answer and explanation

Correct answer: (24) ways

The direct answer is option A: 24 ways. A complete uniform requires one shirt, one pair of trousers, and one pair of shoes. The choices are independent: 3 shirt choices, 2 trouser choices, and 4 shoe choices. For every shirt, there are 2 trouser choices, and for each such pair there are 4 shoe choices. Thus total complete uniforms = 3 × 2 × 4 = 6 × 4 = 24. Option A is correct. Option B, 9, comes from adding 3 + 2 + 4, which does not count combinations. Option C, 12, omits one factor or performs an incomplete product. Option D, 18, is not the product of the three available choices. No item is repeated and no restriction is stated, so every shirt can be paired with every trouser and every shoe. Exam cue: the word ‘complete’ means one selection from each required category, so use multiplication.

Related tags

Permutations-Combinations Fundamental-Principle-Counting Class11Fundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq

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