Boys and girls

There are 11 boys and 18 girls in the classroom. Three pupils will answer. What is the probability that two boys will be among them?

Correct answer:

p =  27.09 %

Step-by-step explanation:

n=11+18=29  C2(3)=(23)=2!(32)!3!=13=3  p0=(23) n11 n110 n218=3 2911 29110 29218=203550.2709  p=100 p0=100 20355=203100 55=2035500=2035500%=27.09%



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Showing 3 comments:
Math student
Answer is not accurate.correct answer is .2679076632908277

Math student
THE ANSWER SHOULDN'T BE ACCURATE IF THE DECIMALS ARE LONG! OKAY?

Math student
Yeah! It's just rounded





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