Topic: Mathematics
Person X can solve 80% of the ISRO question paper and Person Y can solve 60%. The probability that at least one of them will solve a problem from the question paper, selected at random is
- A. 0.48
- B. 0.70
- C. 0.88
- D. 0.92
Answer: D. 0.92
Explanation: $P(X)=0.80$, $P(Y)=0.60$. P(at least one can solve) $=P(X)+P(Y)-P(X\cap Y) = 0.80+0.60-(0.80\times0.60) = 1.40-0.48 = 0.92$.