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 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
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?

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adnanchowdhury
 2 years ago
Best ResponseYou've already chosen the best response.0First 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.

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

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

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

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

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.0u (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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