Practice Probability – Probability of occurrence of event A is 0.5 and that of event B is 0.2. The probability of occurrence of both A and B is 0.1. What is the probability that none of A and B occur?
Practice Probability – A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. The probability that at least one of these is defective, is:
Practice Probability – An unbiased dice is rolled 3 times. The probability that the value on the dice is not more than 4 in any of the 3 rolls is:
Practice Probability – A single letter is drawn at random from the word, “ASPIRATION”, the probability that it is a vowel is?
Practice Probability – The probability of having at least one tail in 5 throws of a coin is
Practice Probability – At a mobile shop, 2 Samsung, 3 Apple and 2 Nokia phones are on display. Two phones are bought on a random basis. What is the probability that none of the chosen ones are Nokia phones?
Practice Probability – Ravi has a bag full of 10 Nestle and 5 Cadbury chocolates. Out of these, he draws two chocolates. What is the probability that he would get at least one Nestle chocolate?
Practice Probability – What is the chance of getting a sum of 10 in a single throw of two dice together?
Practice Probability – A man can hit the target once in four shots. If he fires four shots in succession, what is the probability that he will hit the target?
Practice Probability – Two dices are thrown simultaneously. What is the probability that the sum of the two number is 10 or the product of two numbers is >= 25 or both?
Practice Probability – Two pyramids are thrown with faces 1,2,4,6. Find the probability to get a sum of even number on an their faces?
Practice Probability – If y=x^4+4, where x=any 5 digit number. Find probability that y is divisible by 5??
Practice Probability – Rahul is a cashew merchant in Kerala. He has cashews in sealed wooden boxes of 10kg each. The price of the cashew increases by Rs.20 per kg for every year, but at the same time, 10% of the cashews are eaten by rodents every year. If the price of a 1 kg of fresh cashew is Rs.100, what is the change in his profits if he sells a sealed box after one year of storage, rather than selling it fresh? (In Rs.)
Practice Probability – A type of mixture is prepared by mixing brand at Rs.9 a kg with brand B at Rs.4 a kg.If a mixtue is worth rupees 7 a kg,how many kgs of brand A are needed to make 40 kgs of the mixture?
Practice Probability – Two different types of tea are mixed, at 6 Kg of type 1 and 4 Kg of type 2. One Kg of type 1 is Rs. 6 and that of type 2 is Rs. 7. The seller get 10% profit, by this action. Find at what price, he had sold the mixture/Kg?