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3 years ago

8

there are 9 students in a class: 7 boys and 2 girls. if the teacher picks a group of 3. at random, what is the probability. that

everyone in the group is a boy ?

2 answers:

timurjin [86]3 years ago

6 0

There is a 1 out of 3 chance of a full boy group

taurus [48]3 years ago

4 0

9 students in a class: 7 boys and 2 girls. picks a group of 3 at random P(all boys) = 7/9*6/8*5/7

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3 years ago

4 3/10 - ( 2 2/5x+ 5 1/2) = 1/2(-3 3/5x + 1 1/5)

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Step-by-step explanation:

Step 1 : Simplify: 11/5

Step 2: Simplify 33/5

Step 3 :

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Step 4: Simplify: 1/2

Step 5 : see below

Step 6 : see below

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