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Q3:In the questions below suppose that a word is any string of seven letters of the alphabet, with repeated letters allowed: a) How many words

Q3:In the questions below suppose that a word is any string of seven letters of the alphabet, with repeated letters allowed: a) How many words begin with A or end with B? b) How many words begin with A or B and end with A or B? c) How many words have no vowels? d) How many words have exactly one vowel? e) How many words begin with a vowel and end with a vowel?

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