Mathematics, 07.05.2020 02:14 jazare05

A three-character code uses the letters D and Q. Either of the letters may be repeated.

Find the probability of a code with exactly two D’s. (Hints: Use a list or a tree-diagram to help you. Also, notice the language. They only care about getting exactly two D's. They do not care about the order of the letters.)

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A three-character code uses the letters D and Q. Either of the letters may be repeated.

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