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We perform the experiment "Toss two dice". What is the probability of the event "the sum of the faces equals 5"?


A. 1/6


B. 1/9


C. 5/36


D. 1/36

 

 

We perform the experiment "Toss two dice". What is the probability of the event "no 3 appears on either face"?


A. 1/36


B. 10/36


C. 25/36


D. 11/36

 Dec 3, 2019
 #1
avatar+106539 
+2

First one

We have 36 outcomes

P(2)  = 1/36

P(3)  = 2/36

P(4)  = 3/36

P(5) = 4/36   =  1/9

 

 

cool cool cool

 Dec 3, 2019
 #2
avatar+106539 
+2

Second one

 

P( no 3 appears on either face)  =   5/6  * 5/6   =  25 / 36

 

 

cool cool cool

 Dec 3, 2019

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