Aptitude Questions and Answers for PLACEMENTS

Ques. In a class, 30% of the students offered English, 20% offered Hindi and 10% offered both. If a student is selected at random, what is the probability that he has offered English or Hindi ?
Op 1: 2/5
Op 2: 3/4
Op 3: 3/5
Op 4: 3/10
Op 5:
Correct Op : 1


Ques. A box contains 6 red balls, 7 green balls and 5 blue balls. Each ball is of a different size. The probability that the red ball being selected is the smallest red ball, is
Op 1: 1/18
Op 2: 1/3
Op 3: 1/6
Op 4: 2/3
Op 5:
Correct Op : 3


Ques. If A and B are 2 independent events and P(A)=0.5 and P(B) = 0.4, find P(A/B):
Op 1: 0.5
Op 2: 0.4
Op 3: 0.88
Op 4: None of these
Op 5:
Correct Op : 1