Consider rolling one regular, six-sided die until you get the first one. You may leave answers in decimal or fraction form. a) How many times would you need to roll in order to see a one for the first time (on average)?  b) What is the probability that you will roll a one on the first try?  c) What is the probability that you would roll a one for the first time on the 4th roll?

Elementary Geometry for College Students
6th Edition
ISBN:9781285195698
Author:Daniel C. Alexander, Geralyn M. Koeberlein
Publisher:Daniel C. Alexander, Geralyn M. Koeberlein
Chapter9: Surfaces And Solids
Section9.CT: Test
Problem 14CT: Assume that a die used for gaming is in the shape of a regular octahedron. The faces are numbered...
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Consider rolling one regular, six-sided die until you get the first one. You may leave answers in decimal or fraction form.

a) How many times would you need to roll in order to see a one for the first time (on average)? 

b) What is the probability that you will roll a one on the first try? 

c) What is the probability that you would roll a one for the first time on the 4th roll? 

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