### Quantitative Aptitude - Probability

#### Question - 1

In a simultaneous throw of two coins, the probability of getting at least one head is :

• A $1 \over 2$
• B ​$1 \over 3$​
• C ​$2 \over 3$​
• D ​$3 \over 4$​

#### Question - 2

Three unbiased coins are tossed. What is the probability of getting at least 2 heads ?

• A ​$1 \over 4$​
• B ​$1 \over 2$​
• C ​$1 \over 3$​
• D ​$1 \over 8$​

#### Question - 3

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

• A ​$3 \over 4$​
• B ​$1 \over 4$​
• C ​$3 \over 8$​
• D ​$1 \over 8$​

#### Question - 4

In a single throw of a die, what is the probability of getting a number greater than 4 ?

• A ​$1 \over 2$​
• B ​$1 \over 3$​
• C ​$2 \over 3$​
• D ​$1 \over 4$​

#### Question - 5

In a simultaneous throw of two dice, that is the probability of getting a total of 7 ?

• A ​$1 \over 6$​
• B ​$1 \over 4$​
• C ​$2 \over 3$​
• D ​$3 \over 4$​

#### Question - 6

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

• A ​$1 \over 6$​
• B ​$1 \over 8$​
• C ​$1 \over 9$​
• D ​$1 \over 12$​

#### Question - 7

In a simultaneous throw of two dice, what is the probability of getting a doublet ?

• A ​$1 \over 6$​
• B ​$1 \over 4$​
• C ​$2 \over 3$​
• D ​$3 \over 7$​

#### Question - 8

In a simultaneous throw of two dice, What is the provavility of getting a total of 10 or 11 ?

• A ​$1 \over 4$​
• B ​$1 \over 6$​
• C ​$7 \over 12$​
• D ​$5 \over 36$​

#### Question - 9

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

• A ​$1 \over 2$​
• B ​$3 \over 4$​
• C ​$3 \over 8$​
• D ​$5 \over 16$​

#### Question - 10

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn bears a number which is a multiple of 3 ?

• A ​$3 \over 10$​
• B ​$3 \over 20$​
• C ​$2 \over 5$​
• D ​$1 \over 2$​