There are 21 girls and 33 boys in a classroom. I want to randomly select one student to become the class leader. If I want to find the probability that the selected student is a girl, the number of favourable outcomes is ___.

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Solution

Given,

Number of boys = 33

Number of girls = 21

Total number of outcomes= total number of students = 21 + 33 = 54

A girl being selected is a favourable outcome.

$\Rightarrow$ Number of favourable outcomes = 21

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There are 21 girls and 33 boys in a classroom. I want to randomly select one student to become the class leader. If I want to find the probability that the selected student is a girl, the number of favourable outcomes is ___.

Given, Number of boys = 33 Number of girls = 21 Total number of outcomes= total number of students = 21 + 33 = 54 A girl being selected is a favourable outcome. ⇒ Number of favourable outcomes = 21

Given,

Number of boys = 33

Number of girls = 21

Total number of outcomes= total number of students = 21 + 33 = 54

A girl being selected is a favourable outcome.

$\Rightarrow$ Number of favourable outcomes = 21