Aptitude Questions and Answers for PLACEMENTS

Ques. There are two boxes A and B. Box A has three red and four blue balls. Box B has five red and two blue balls. Anya draws a ball from each bag randomly. What is the probability that both balls are red?
Op 1: 4/7
Op 2: 8/49
Op 3: 7/8
Op 4: 15/49
Op 5:
Correct Op : 4

Ques. Ravi has a bag full of 10 Nestle and 5 Cadbury chocolates. He draws two chocolates. What is the probability that he got at least one Nestle chocolate?
Op 1: 2/3
Op 2: 3/7
Op 3: 2/21
Op 4: None of these
Op 5:
Correct Op : 4

Ques. The probability of having at least one tail in 5 throws of a coin is
Op 1: 1/32
Op 2: 31/32
Op 3: 1/5
Op 4: None of these
Op 5:
Correct Op : 2