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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 Nov 27, 2018

Best Answer 

 #1
avatar+3198 
+1

I assume the spinner and die are independent.  So

 

\(P[\text{spinner is multiple of 4} \cap \text{dice is factor of 15}] = \\ P[\text{spinner is multiple of 4}]P[\text{dice is factor of 15}] = \\ \dfrac{1}{5} \dfrac{1}{2} = \dfrac{1}{10}\)

Rom  Nov 27, 2018
 #1
avatar+3198 
+1
Best Answer

I assume the spinner and die are independent.  So

 

\(P[\text{spinner is multiple of 4} \cap \text{dice is factor of 15}] = \\ P[\text{spinner is multiple of 4}]P[\text{dice is factor of 15}] = \\ \dfrac{1}{5} \dfrac{1}{2} = \dfrac{1}{10}\)

Rom  Nov 27, 2018

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