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How many 6-letter words can be made from the letters WASTEFUL if repetition of letters is allowed?

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  1. Well, you have 8 letters to pick from and you can repeat your choices, so
    8x8x8x8x8x8
    = 8^6
    = 262144

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  2. How many 6-letter words can be made from the letters WASTEFUL if repetition of letters is not allowed?

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  3. 48

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