SEARCH HOME
Math CentralQuandaries & Queries

search

Question from Michelle, a student:

A single die is rolled twice. Find the probability of getting two numbers whose sum exceeds 5.
I can't seem to come up with any of these answers, Help. A. 0.72 B. 0.89 C. 0.68 D. 0.58

Michelle,

I would use a table to list al possible 36 outcomes. Here is a start. The 6 rows are the result on the first die and the 6 columns are the result on the second die. The body of the table contains the sum of the two dice.

  1 2 3 4 5 6
1 2 3 4 5 6 7
2 3 4 5 6 7 8
3            
4            
5            
6            

Complete the table and count how many of the 36 outcomes have a sum which exceeds 5.

Penny

About Math Central
 

 


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.
Quandaries & Queries page Home page University of Regina PIMS