We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
258
1
avatar+87 

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+23140 
+10

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+23140 
+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

27 Online Users

avatar
avatar
avatar