Directions : From a class total 360 students appeared in an exam. Three fourth of these are boys. 40 % boys failed in the exam, two third of the girls are failed in the exam and remaining passed :
1.What is the ratio of the total number of girls to the number of boys who failed in the exam ?
1) 4 : 9
2) 9 : 5
3) 5 : 6
4) 6 : 3
5) None of these
2.What is the sum of the number of boys who failed and number of girls who passed in the exam ?
5) None of these
3.What is the difference between the number of boys who are passed and number of girls who are failed ?
5) None of these
4.What is the ratio of the total number of boys and girls who are passed to the number of boys and girls who are failed ?
1) 7 : 8
2) 8 : 7
3) 9 : 17
4) 5 : 7
5) None of these
5. Total number of boys passed is approximately what percent of total number of girls in the class ?
2) 120 %
3) 150 %
4) 180 %
Direction: A bag contains 4 red, 5 brown and 6 white balls. Three balls are drawn randomly :
6.What is the probability that balls drawn contains exactly two red balls ?
5) None of these
7.What is the probability that the balls drawn contains no brown ball ?
5) None of these
8.What is the probability that the balls drawn are not of the same colour ?
4) 421/455
5) None of these
9. If two balls are drawn randomly then what is the probability that both the balls are of same colour ?
4) 421/455
5) None of these
10.What is the probability that the three balls drawn are of different colour ?
5) None of these
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