anonymous
  • anonymous
Calculate the number of arrangements of the letters in the word NUMBER? One of the arrangement of the word NUMBER above is chosen at random.What is the probability that it begins and ends with a vowel?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
First question is easy. 6! = 720. Second question i got my answer to be: 2 x 4! = 48. Therefore probability is 48/720 = 1/15. But the answer in the book says 1/45.
anonymous
  • anonymous
your working is right as far as i can tell...
anonymous
  • anonymous
I'm thinking it's an error in the book?

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anonymous
  • anonymous
has to be.
anonymous
  • anonymous
I am getting the same result as you.
anonymous
  • anonymous
Ok thanks guys. I think it's book's mistake.
amistre64
  • amistre64
u (4*3*2*1) e = 24 ways = 48 ways e (4*3*2*1) u = 24 ways 48 ------ = 2/30 = 1/15 ..... so, yeah 24*30

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