Question

there are 60 students In a class among which 30 are boys .In another class there are 50 students among which 25 of them are boys .If one each class is selected
what is the probability of both being girls
what is the probability of having atleast one girl​

Answer 1

Answer:

It's very simple it's 50%/1/2 of the class it's so easy buddy

if it helps than please mark me as brainliest

Answer 2

Answer:

(a) 1/4 (b) 3/4

Step-by-step explanation:

Class 1:

Total Students = 60

Boys = 30

Girls = 60 - 30 = 30

Class 2:

Total Students = 50

Boys = 25

Girls = 50 - 25 = 25

Find the probability that both girls are selected:

P(Both girls) = 30/60 x 25/50

P(Both girls) = 1/4

Find the probability that at least one girl is selected:

P(At least 1 girl) = P(Both girls) + P(girl + boy) + P(boy + girl)

P(At least 1 girl) = 30/60 x 25/50 + 30/60 x 25/50 + 30/60 x 25/50

P(At least 1 girl) = 3/4

Answer: (a) 1/4 (b) 3/4