Aptitude Questions and Answers for SSC and Bank Exams

Aptitude Questions and Answers:

49. A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag.The probability that all of them are red, is : 

(A) 1/11

(B) 3/23

(C) 2/91

(D) 2/77

(E) None of these

50. A bag contains 2 red, 3 green and 2 blue balls. Three balls are drawn at random. What is the probability that none of the balls drawn is blue?

(A) 10/21

(B) 11/21

(C) 2/7

(D) 7/5

(E) None of these

51. If the length and breadth of a rectangular plot be increased by 50% and 20% respectively, then how many times will its area be increased?

(A) 1/2

(B) 2/3

(C) 17/2

(D) 21/5

(E) None of these

52. The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?

(A) 14% increase

(B)  50% increase

(C) 14% decrease

(D) 50% decrease

53. The product of two number is 192 and the sum of these two number is 28. What is the smaller of these two number?

(A) 12

(B) 15

(C) 18

(D) 20

54. Two numbers differ by 5. If their product is 336, then the sum of the two number is:

(A) 23

(B) 29

(C) 37

(D) 52

55. In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such that at least one boy should be there?

(A) 148

(B)157

(C) 203

(D) 209

56. How many 3-digit numbers can be formed from the digit 2,3,5,6,7 and 9, which are divisible by 5 and none of the digits is repeated?

(A) 5

(B) 10

(C) 15

(D) 20

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