Question

The above pie chart depicts the percentage of students being girls and boys in the mechanical branch of a college. If the red coloured portion represents the percentage of boys, and the total number of students is 100, then what is the probability of a student being picked at random is a girl?

• A. 1/25
• B. 25/99
• C. 1/4
• D. 1/8

Answer 1

The correct option is C

1/4

Total number of students = 100

Percentage being girls = 25% = $\frac{25}{100}$

Number of girls = $25\times \frac{100}{100}$

So probability of picking a girl = $\frac{totalnumberoffavourableoutcomes}{totalnumberofoutcomes}$

= $\frac{\text{Number of girls}}{\text{Total number of students}}$

= $\frac{25}{100}$ = $\frac{1}{4}$