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A chemist needs to select 3 catalysts from a set of 8 to maximize reaction yield in a batch reactor. Which outcome will optimize the experimental design?

A)Order matters; use permutation
B)Order irrelevant; use combination
C)Repeat catalysts; use inclusion
D)Ignore subsets; use partitioning

💡 Explanation

Using combinations is appropriate because the order in which the catalysts are chosen doesn't matter for experimental design, therefore we use combinations to find the number of unique groups of catalysts, rather than permutations which consider order.

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