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Rohit and Vishal, two below-average students in a class, are attempting a Mathematics problem…
Rohit and Vishal, two below-average students in a class, are attempting a Mathematics problem during revision classes. Their respective probabilities of solving the sum correctly are $\frac{1}{6}$ and $\frac{1}{8}$ respectively. Their previous experience shows that while solving the same question, the probability of a common mistake is $\frac{1}{10}$. What is the probability that they obtain the same answer?
- (a)$\frac{3}{4}$
- (b)$\frac{7}{48}$
- (c)$\frac{11}{96}$
- (d)$\frac{9}{96}$
Answer
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From ISC 2025 Practice Mathematics, question 14.