A bag contains 15 White balls, 5 Red balls. A ball is drawn at random. Probability in percentage that the drawn ball be a white ball is
- 75
- 25
- 70
- 80
The Correct Option is A
Solution and Explanation
Top Questions on Probability
Four students of class XII are given a problem to solve independently. Their respective chances of solving the problem are: \[ \frac{1}{2},\quad \frac{1}{3},\quad \frac{2}{3},\quad \frac{1}{5} \] Find the probability that at most one of them will solve the problem.
Two persons are competing for a position on the Managing Committee of an organisation. The probabilities that the first and the second person will be appointed are 0.5 and 0.6, respectively. Also, if the first person gets appointed, then the probability of introducing a waste treatment plant is 0.7, and the corresponding probability is 0.4 if the second person gets appointed.
Based on the above information, answer the followingThe probability distribution of a random variable \( X \) is given below:
\( X \) 1 2 4 2k 3k 5k \( P(X) \) \( \frac{1}{2} \) \( \frac{1}{5} \) \( \frac{3}{25} \) \( \frac{1}{10} \) \( \frac{1}{25} \) \( \frac{1}{25} \) - A coin is tossed three times. The probability of getting at least two heads is:
- Two dice are thrown. Defined are the following two events A and B: \[ A = \{(x, y) : x + y = 9\}, \quad B = \{(x, y) : x \neq 3\}, \] where \( (x, y) \) denote a point in the sample space. Check if events \( A \) and \( B \) are independent or mutually exclusive.
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