If three socks are chosen at random, what is the probability that all are blue socks?

Probability = ³C₃ / ¹⁰C₃ = 1/120

- The probability of selecting a rotten apple randomly from a heap of 250 apples is 0.20. What is the number of rotten apples in the heap?
- If 3 pens are drawn at random what is the probability that all are black?
- A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
- Two hats are picked at random, what is the probability that all hats are of green colour?
- Two schools, A and B participate in a Quiz competition. The probability of A’s winning is 3/7 and the probability of B’s winning is 3/5. What is the probability that only one of them wins?
- One five letter word is to be formed taking all letters – U, Z, M, O and Q. What is the probability that this is word formed will contain all vowels together?
- Given that E and F are events such that P(E) = 0.7, P(F) = 0.4 and P(E cap; F) = 0.3, find P(E|F) and P(F|E)
- Two schools, A and B participate in a Quiz competition. The probability of A’s winning is 3/7 and the probability of B’s winning is 3/5. What is the probability that only one of them wins?
- If the letters of the word HORIZON be arranged at random, what is the probability that all the vowels are together?
- A question is given to Saket, Ankush and Prem. Probability that Saket, Ankush and Prem can solve the question is 1/3, 2/5 and 1/2. Find the probability that the question will be solved.

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