engineering recuitment HAL Management & Design Trainee Mock Test 2023 Engineering Mathematics Probability and Statistics
A bag contains 50 balls of which 10 are red and the remainder black. If two balls are drawn successively from the bag at random, what is the probability of selecting one red and one black ball?
1
\(\frac{9}{245}\)
2
\(\frac{156}{245}\)
3
\(\frac{16}{49}\)
4
\(\frac{156}{49}\)