Exercise :: Probability  General Questions
 Probability  Important Formulas
 Probability  General Questions
6.  Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even? 

Answer: Option B Explanation: In a simultaneous throw of two dice, we have n(S) = (6 x 6) = 36.
n(E) = 27.

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: 

Answer: Option A Explanation: Let S be the sample space and E be the event of selecting 1 girl and 2 boys.

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? 

Answer: Option C Explanation:

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

Answer: Option D Explanation: Let S be the sample space.
Let E = event of getting 2 kings out of 4.

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

Answer: Option B Explanation: Clearly, n(S) = (6 x 6) = 36. Let E = Event that the sum is a prime number.
n(E) = 15.
