Some standardized test questions may ask you about acceptable arrangements for a number of items. We call these Combination and Permutation problems. The key to solving these problems is to determine first whether the order of the arrangement matters.
For example:
Five runners run in a race. The runners who come in first, second, and third place will win gold, silver, and bronze medals respectively. How many possible outcomes for gold, silver, and bronze medal winners are there?
If the order of the arrangement matters, you are, mathematically speaking, looking for the number of permutations. The example above is, in fact, a permutation problem.
Let's go to the next page to find out how we handle these types of questions.
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Video Lessons and 10 Fully Explained Grand Tests
Large number of solved practice MCQ with explanations. Video Lessons and 10 Fully explained Grand/Full Tests.