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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?
 2 years ago
 2 years ago
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?
 2 years ago
 2 years ago

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adnanchowdhuryBest ResponseYou've already chosen the best response.0
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.
 2 years ago

indianalexanderBest ResponseYou've already chosen the best response.2
your working is right as far as i can tell...
 2 years ago

adnanchowdhuryBest ResponseYou've already chosen the best response.0
I'm thinking it's an error in the book?
 2 years ago

FoolForMathBest ResponseYou've already chosen the best response.2
I am getting the same result as you.
 2 years ago

adnanchowdhuryBest ResponseYou've already chosen the best response.0
Ok thanks guys. I think it's book's mistake.
 2 years ago

amistre64Best ResponseYou've already chosen the best response.0
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
 2 years ago
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