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Andy spins a fair spinner numbered 1 - 5 and rolls a fair dice. 
What is the probability of obtaining a multiple of 4 and a factor of 15?

Guest Jun 23, 2018
edited by Guest  Jun 23, 2018
 #1
avatar+87301 
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Here are the possible outcomes :

 

1,1   1,2   1,3   1,4    1,5    1,6

2,1  2,2    2,3   2,4    2,5    2,6

3,1  3,2    3,3   3,4    3,5    3,6

4,1  4,2    4,3   4,4    4,5    4,6

5,1  5,2   5,3    5,4    5,5    5,6

 

We have 30 possible outcomes

Those which are multiples of 4 and  factors of 15   (in any order) are in red  = 6 outcomes

 

So....the probability is   6 / 30   =  1 / 5

 

 

cool cool cool

CPhill  Jun 23, 2018

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