In a school there are 1000 students, out of which 430 are girls. It is known that out of 430, 10% of the girls study in class XII. What is the probability that a student chosen randomly studies in Class XII given that the chosen student is a girl

Explanation

Let S shows a student chosen randomly studying in class XII and G shows a girl student chosen randomly.


We know,



`P(G)=frac{430}{1000} `

`
P(S / G)=frac{43}{1000}`

`
P(S / G)=frac{P(S cap G)}{P(G)}=frac{frac{43}{1000}}{frac{4300}{1000}}=frac{1}{10}`