In class, 30% of students study Hindi, 45% study Maths, and 15% study both Hindi and Maths. If a student is randomly selected, what is the probability that he/she study Hindi or maths?

3/5

The correct answer is Option 3: 3/5

Students in Hindi = 30 %

Students in Maths= 45%

Students study both hindi and Maths = 15%

P(Hindi or Maths)=P(Hindi)+P(Maths)−P(Both)

= 30/100 + 45/100 - 15/100

= \(\frac{30 + 45 - 15}{100}\)

= \(\frac{60}{100}\)

= \(\frac{3}{5}\)