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Master | Next Rank: 500 Posts
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by Amrabdelnaby » Sat Nov 14, 2015 7:58 am
Hi Brent,

I really can't understand the logic behind this question?

Please help Smile

There are 10 envelopes and 10 letters to go inside them. Each letter is menat for a specified envelope only. What is the probability that exactly 9 of them are in the right envelope?

a)1/10!
b)0
c)1
d)9/10
E) none of above
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Source: — Problem Solving |

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by [email protected] » Sat Nov 14, 2015 6:02 pm
Hi amrabdelnaby,

You should post this question in the Problem Solving Sub-Forum here:

https://www.beatthegmat.com/problem-solving-f6.html

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