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16 May, 23:04

You select a card at random from the cards that make up the word "replacement". Without replacing the card, you choose a second card. Find the probability of choosing a vowel and then not a vowel. There is 1 letter for each card.

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  1. 17 May, 01:46
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    Replacement ... total of 11 letters ... 4 vowels, 7 consonants

    probability of first picking a vowel = 4/11

    without replacing

    probability of not picking a vowel = 7/10

    probability of both = 7/10 * 4/11 = 28/110 reduces to 14/55
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