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February 9th, 2014, 09:38 AM  #1 
Newbie Joined: Oct 2013 Posts: 8 Thanks: 0  Probability of 2 dice and grid/table?
Information: Two dice: one of the die has 6 values (numbers one to six) and has six faces, the other die has 4 values (the numbers are 1,1,2,3,6,6) and also six faces. Question: Rolls both dice at the same time... what is the probability of a even number on the first dice and an odd number on the second dice? Answer: P = 3/6 + 3/6 = 6/12? Question: Rolls both dice at the same time... what is the probability of a number 3 on one dice and a number one on the other? Answer: the first dice number 3. P = 1/6? Answer: the second dice number one. P = 2/6? = 3/12??? Question: Draw a 2way table to illustrate all possible totals then both dice are thrown? I know how to draw a 'fair' 2 dice table (link below) but don't know how to draw a table with one dice showing different values? 2 fair dice table. http://01.educdn.com/files/static/mcgr ... ITY_04.GIF 
February 9th, 2014, 12:23 PM  #2  
Global Moderator Joined: May 2007 Posts: 6,759 Thanks: 696  Re: Probability of 2 dice and grid/table? Quote:
For your first question: A = {even number on first die} P(A) = 1/2, B = {odd number on second die} P(B) = 1/2. Since A and B are independent, the probability of both happening = 1/4. Similarly  second question: prob. (both) = (1/6)x(1/3) = 1/18. For the table, you simply have a 4 x 6 table. {1,2,3,6} x {1,2,3,4,5,6}  
February 9th, 2014, 02:30 PM  #3  
Math Team Joined: Dec 2006 From: Lexington, MA Posts: 3,267 Thanks: 408  Re: Probability of 2 dice and grid/table? Hello, jacob1988! Quote:
Quote:
There are two cases to consider. Quote:
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February 9th, 2014, 03:06 PM  #4 
Newbie Joined: Oct 2013 Posts: 8 Thanks: 0  Re: Probability of 2 dice and grid/table?
Thankyou for the reply(s) I really profusely appreciate the help 

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