Question

In the beginning of the session there were 40 students in class 10 out of which 21 were boys and 19 were girls. 7 students get promoted after compartment examination out of which 4 were girls and 3 were boys. who has more probability of getting selected as class monitor? what is the difference between their probabilities?

Answer 1

Answer:

we know that total strength 40 ,after promoted total will 47

then total girl = 19+4=23

so,profitability = 23/47

total boy's =21+3=24

so,probability = 23/47

so the difference of theirs probability = 23/47 - 23/47 =0

both have same probability