+0  
 
0
241
1
avatar+589 

Two number cubes are rolled. Each number cube has sides numbered 1 through 6.

 

What is the probability that the outcome of the roll is an even sum or a sum that is a multiple of 3?

 Feb 6, 2018
 #1
avatar+95883 
+2

Here are the outcomes  and their  frequencies

 

Outcomes  -  Frequencies

 

2     -    1              7   -  6          12  -  1

3     -    2              8   -  5

4    -     3              9   -  4

5    -     4             10  -  3

6    -     5             11  -  2

 

 

P (  even or multiple of 3 )  =

 

P( even) + P(multiple of 3)  - P(even and multiple of 3)   =

 

18 / 36  +  12 / 36  -  4/36  =

 

26 / 36  =     13/18

 

 

cool cool cool

 Feb 6, 2018

10 Online Users

avatar
avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.