All the boys are not sitting together?

More Questions from Probability

• All the girls are sitting together.
• All the boys are sitting together.
• A fair coin is tossed 100 times, The probability of getting head an odd number of times is?
• Out of 15 students studying in a class, 7 are from Maharastra, 5 are from Karnataka and 3 are from Goa, Four students are to be selected at random. What are the chances that at least one is from Karnataka?
• In a box carrying one dozen of oranges, one third have become bad. If 3 oranges are taken out from the box at random, what is the probability that at least one oranges out of the three oranges picked up is good?
• What is the probability that a leap year selected randomly will have 53 Mondays?
• What is the probability that a leap year selected randomly will have 53 Mondays?
• If the probability for A fail in an examination is 0.2 and that for B is 0.3, then the probability that either A or B fails is?
• A fair coin is tossed 100 times . The probability of getting tails an odd number of times is?
• A natural number is selected at random from the set x = { x : 1 ≤ x ≤ 100 }. The probability that the number satisfies the inequality x 2 - 13x ≤ 30 is?

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