There are 20 envelopes on a table and you get to pick one at random. In one of the envelopes there is a hundred-dollar bill and in the other 19 there are blank pieces of paper what is the expected value for picking an envelope

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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There are 20 envelopes on a table and you get to pick one at random. In one of the envelopes there is a hundred-dollar bill and in the other 19 there are blank pieces of paper what is the expected value for picking an envelope

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