Subject
Quantitative Aptitude
Topic
Probability
In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is:
In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is:
ক)
21/46খ)
1/5গ)
3/25ঘ)
1/50Explanation
Let S be the sample space and E be the event of selecting 1 girl and 2 boys. Then, n(S) = Number ways of selecting 3 students out of 25 = = 2300. n(E)= = 1050. P(E) = n(E)/n(s) = 1050/2300 = 21/46Related questions
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