Selecting an answer

2011 11 7
1 个回答
5 次查看（30 天）

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Ok here's a brain-teaser type question. It's multiple choice. Enjoy :)
options = {'A','B','C','D};
myAnswer = options{randi(4)};
Now, what is the chance of "myAnswer" being correct for A,B,C,D below?
A) 25%
B) 50%
C) 60%
D) 25%
... and should I get the Statistics Toolbox to help me? :)

5 个评论
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Jan
Jan 2011-11-7
What do the percentage numbers mean? What is the qualitative difference between A) and D)?
Sven
Sven 2011-11-7
Sorry Jan, just a puzzle I found - no further info available. I tried thinking it through as a last resort (thinking should always be a last resort)... but met some difficulty.
Andrei Bobrov
Andrei Bobrov 2011-11-7
options{randi(4)} - 25% 25% 25% 25%
Sven
Sven 2011-11-7
This video may help:
http://www.youtube.com/watch?feature=player_embedded&v=evKYF1G_uDI

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回答（1 个）

LY Cao
LY Cao 2011-11-7

0 个投票

B, have any questions？

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Sven
Sven
2011-11-7

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