Probability - Aptitude Questions and Answers Part 3

11. Ram has three dices. If he rolls them simultaneously, what is the probability of getting a sum greater than 15?

a.5
54
b.11
216
c.15
216
d.17
216

Answer: a.5
54


12. If I roll two dices simultaneously, what is the probability of getting a sum less than 13?

a.1
2
b. 0.75
c. 1
d. 1.25

Answer: c. 1


13. In a bag are 10 red balls and 16 green balls. If two balls are drawn one after the other without replacement, what is the probability that the first is "red" while the second one is "green"?

a.18
145
b.35
134
c.16
65
d.17
29

Answer: c.16
65


14.  Ramesh throws two dices simultaneously. What is the probability that the sum of numbers on top faces in a throw is 9?

a.1
12
b.1
9
c.1
3
d.2
9

Answer: b.1
9


15. India is playing 3 sets of badminton matches against Japan at Singapore. The probability of India winning the three sets is  1/7, 1/5, 3/4. What is the probability of winning at least 1 set of game?

a.7
24
b.23
24
c.23
35
d.29
35

Answer: d.29
35