engineering recuitment GATE CSE 2023-24 Test Series Engineering Mathematics Probability Conditional Probability
A die is thrown twice and the sum of the dots on the two faces appeared, is observed to be 7. The conditional probability that number 2 has appeared at least once is
1
\(\frac{1}{2}\)
2
\(\frac{2}{3}\)
3
\(\frac{1}{3}\)
4
\(\frac{1}{4}\)