Consider the word peach we will make lists from the letters


Question: Consider the word PEACH. We will make lists from the letters in PEACH, with repetition allowed.

(a) How many three-letter lists are there that don't begin with C, or don't end in P?

(b) How many four-letter lists are there in which the sequence of letters P, E, A appears in that order?

(c) How many three-letter lists are there in which the letters C, H appear consecutively?

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Mathematics: Consider the word peach we will make lists from the letters
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