Quantitative Apitude-Probability
Quantitative Apitude-Probability
1. Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5?
- 1/2
- 2/5
- 815
- 920
2. A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?
- 10/21
- 11/21
- 2/7
- 5/7
3. In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?
- 1/3
- 3/4
- 7/19
- 8/21
4. What is the probability of getting a sum 9 from two throws of a dice?
- 1/6
- 1/8
- 1/9
- 1/12
5. Three unbiased coins are tossed. What is the probability of getting at most two heads?
- 3/4
- 1/4
- 3/8
- 7/8
6. Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?
- 1/2
- 3/4
- 3/8
- 5/16
7. In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is:
- 21/46
- 25/117
- 1/50
- 3/25
8. In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?
- 1/10
- 2/5
- 2/7
- 5/7
9. From a pack of 52 cards, two cards are drawn together at random. What is the probability of both the cards being kings?
- 1/15
- 25/57
- 35/256
- 1/221
10. Two dice are tossed. The probability that the total score is a prime number is:
- 1/6
- 5/12
- 1/2
- 79