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Math(Check answer)

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Jennifer writes the letters M-O-N-T-A-N-A on cards and then places the cards in a hat. What are the odds in favor of picking a vowel?
3:7
4:7
3:4
4:3

I think its 3:7
And my other question is..

Jennifer writes the letters M-O-N-T-A-N-A on cards and then places the cards in a hat. What are the odds against picking a vowel?
3:7
4:7
3:4
4:3

My answer: 4:7

  • Math(Check answer) - ,

    Both are correct.

  • Correction - Math(Check answer) - ,

    Both are wrong
    Odds and probability are not the same thing
    you have found the prob(picking a vowel)

    Odds in favour of picking a vowel
    = prob of picking a vowel : prob of NOT picking a vowel
    = 3/7 : 4/7
    = 3 : 4

    the second question simply reverses the odds
    should be
    4 : 3

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