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?
Answer & explanation
Correct answer: option 3
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
= \(\frac{30 + 45 - 15}{100}\)
= \(\frac{60}{100}\)
= \(\frac{3}{5}\)