In a class there are 20 boys and 19 girls. If one student comes late and is sent home, find the probability of (i) selecting a girl (ii) selecting a boy
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0
Answer: i.
Step-by-step explanation: If there is 20 boys, logic would say that there should be 19 girls, but there is only 19, so one got sent home.
vignuamith:
What is the ratio?
Answered by
6
Given,
Boys = 20
Girls = 19
Total students = 20+19
= 39
I) Probability of selecting a girl is
= No.of girls/ Total no.of
students
= 19/39
II) Probability of selecting a boy is
= No.of boys/ Total
no.of
students
= 20/39
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