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Stat 2150 - Worksheet 4 Question 1 An alphabet has six letters: a, b, c, d, e, and f. Suppose that a four- letter word

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Stat 2150 - Worksheet 4 Question 1 An alphabet has six letters: a, b, c, d, e, and f. Suppose that a four- letter "word" is to be formed by selecting four letters at random, with replacement. What is the probability that this word... (a) Contains no repeated letters? (b) has a or b as the first letter? (c) does not contain the letter c? (d) contains the letter c exactly once

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