Question

There are 45 students in a class in which 25 are boys and rest are girls .
Find probability of a girl?
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Answer 1

Answer:

Total people=45

Boys=25

Girls=45-25

       =20

Probability of a girl=20/45

                    =4/9

Step-by-step explanation:

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Answer 2

Answer:

Total number of students = 45

total number of boys = 25

thus total number of girls = 45 - 25 = 20

$P(E) = \frac{possible number of outcomes}{total number of outcomes}$

$P(E) = \frac{20}{45}$

$P(E) = \frac{4}{9}$

thus the probability of a girl is  $\frac{4}{9}$