A bag contains 7 green and 8 white balls. If two balls are drawn simultaneously, the probability that both are of the same colour is? A. 8/15 B.2/5 C. 3/5 D. 7/15 Answer and Feedback Answer:D Feedback:Drawing two balls of same color from seven green balls can be done in ⁷C₂ ways. Similarly from eight white balls two can be drawn in ⁸C₂ ways.P = ⁷C₂/¹⁵C₂ + ⁸C₂/¹⁵C₂ = 7/15 Questions in to this exercise. Do you want test? Practice probability Online Test 1 | Englishfreetest.com Test Share this post some other questions in the test. The probability that a number selected at random from the first 50 natural numbers is a composite number is? If a number is chosen at random from the set {1, 2, 3, ...., 100}, then the probability that the chosen number is a perfect cube is? Out of first 20 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is? If four coins are tossed, the probability of getting two heads and two tails is? If a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is ? If six persons sit in a row, then the probability that three particular persons are always together is? A bag contains 7 green and 8 white balls. If two balls are drawn simultaneously, the probability that both are of the same colour is? A basket has 5 apples and 4 oranges. Three fruits are picked at random. The probability that at least 2 apples are picked is? Three 6 faced dice are thrown together. The probability that all the three show the same number on them is ? Three 6 faced dice are thrown together. The probability that no two dice show the same number on them is ? Some other questions you may be interested in. We ………………. the railway station before the train arrived. They do not …………………. here. I …………………. editing this magazine for twenty five years by next December. Peter …………………. two wickets before rain interrupted play. I …………………. him twice before he left for New York. Nowadays there are ....................... families with disposable incomes. How …………….. students participated in the program? ……………… them arrived late. …………….. us are disappointed with this decision. There are ……………. people who want to be millionaires.
