## 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?

## 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?

## 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?

## 4. What is the probability of getting a sum 9 from two throws of a dice?

## 5. Three unbiased coins are tossed. What is the probability of getting at most two heads?

## 6. Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?

## 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:

## 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?

## 9. From a pack of 52 cards, two cards are drawn together at random. What is the probability of both the cards being kings?

## 10. Two dice are tossed. The probability that the total score is a prime number is:

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