The probability that at least one of them is an ace is:79.If A and B are events, such that P(A)= 0.42, P(B) = 0.48 and P(AB)∩= 0.16, the P(A+B) is equal to80.Three identical dice are rolled. The probability that the same number will appear on each of them is81.A problem is given to three persons and their chances of solving it are 1/3, 1/5, 1/6 respectively.The probability that none will solve it is:82.From a group of 5 boys and 3 girls, three persons are chosen at random. Find the probability thatthere are more girls than boys.83.For a biased dice, the probabilities for the different faces to turn up areFace123456P0.100.320.210.150.050.17The dice is tossed and you are told the either face 1 or face 2 has turned up, then the probabilitythat it is face 1 is84.The chance that the vowels are separated in an arrangement of the letters of the word ‘HORROR’is:85.The problem in mathematics is given to 3students whose chances of solving individually are ½, 1/3and ¼, The probability that the problem will be solved at least by one is86.An urn contains 9 balls two of which are red, three blue and four black. Three balls are drawn atrandom.The probability that they are of same colour is87.If A and B are two incidences and P(A) = 3/8, P(B) = ½ , P()AB∩= ¼, then the value of PA` U B`) is:88.An unbiased dice is rolled four times.The probability that the minimum number on any toss is notless than 3 is:89.A cricket club has 15 members of which only 5 can bowl.If the names of 15 members are put intoa box and 11 names are drawn at random, then the probability of obtaining 11 member teamcontaining exactly three bowlers is:90.The probability for a randomly chosen month to have its 10thday as Sunday is91.In a non-leap year, the probability of getting 53 Sundays or 53 Tuesdays or 53 Thursdays is:92.If A and B are two events, such that P(A) > 0 and P(B) ≠ 1, then P()A / Bis equal to

FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS284THE INSTITUTE OF COST ACCOUNTANTS OF INDIA93.The odds against an event A are 5:2 and odds to favour of another independent event B are 6:5.The chances that neither A nor B occurs is94.A bag contains 5 brown and 4 white socks.A man pulls out 2 socks.The probability that they areof the same colour is:95.A purse contains 4 copper coins and 3 silver coins, the second purse contains 6 copper coins and2 silver coins. A coin is taken out from any purse, the probability that it is a copper coin is:96.A sample space has only three points a1, a2, a3. If a1is likely to occur as a2and a3is twice as likelyto occur as a3then P(a3) is97.From a pack of cards, two are drawn, the first being replaced before the second is drawn.Thechance that the first is a diamond and the second is a king is:98. If P(AB)∩= 0.15, P(Bc) = 0.10, then P(A/B) is99.If there are 3 children in a family, then probability that there is one girl in the family is100. Two events A and B have probabilities 0.25 and 0.50 respectively. The probability that both A andB occur simultaneously is 0.14.Then the probability that neither A nor B occur is:MCQ Answers:1c2c3c4c5d6c7d8b9a10a11b12b13b14a

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