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There are 32 students in the Classroom. There 12 boys and 20 girls. She needs to select two students to represent her class .She will put all students names on a piece of paper and randomly select two names, one after the other. What is the probability that she will select a boy first and then a girl?

 Dec 12, 2018

Best Answer 

 #1
avatar+21816 
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There are 32 students in the Classroom. There 12 boys and 20 girls.

She needs to select two students to represent her class .

She will put all students names on a piece of paper and randomly select two names, one after the other.

What is the probability that she will select a boy first and then a girl?

 

\(\dfrac{12}{32}\times \dfrac{20}{31} = 0.24193548387\quad (24.2\ \%) \)

 

 

laugh

 Dec 12, 2018
 #1
avatar+21816 
+10
Best Answer

There are 32 students in the Classroom. There 12 boys and 20 girls.

She needs to select two students to represent her class .

She will put all students names on a piece of paper and randomly select two names, one after the other.

What is the probability that she will select a boy first and then a girl?

 

\(\dfrac{12}{32}\times \dfrac{20}{31} = 0.24193548387\quad (24.2\ \%) \)

 

 

laugh

heureka Dec 12, 2018

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