# Exam Exam
1.- If we roll a die, which of the following events is the certain event?

 a) Obtain a number lower than 6 b) Obtain a number greater than 1 c) Obtain a one digit number d) Obtain a letter

2.- If we roll a die, which of the following events is the impossible event?

 a) Obtain a number greater than 6 b) Obtain a number lower than 1 c) Obtain a one digit number d) Obtain a letter

3.- If we roll a die, which of the following events is more likely?

 a) Obtain an even number b) Obtain a number lower than or equal to 4 c) Obtain 1 or 6 d) Obtain an odd number

4.- If we roll a die, what is the probability of the event a={obtain an even number}?

 a) P(A)=1/3 b) P(A)=1/2 c) P(A)=2/6 d) None of them

5.-If we flip two coins, what of the following events is more unlikely?

 a) Obtain two heads b) Obtain at least one tail c) Obtain exactly one head d) Obtain a head or a tail

6.- If we flip two coins, what is the probability of the event A={two tails}?

 a) P(A)=1/3 b) P(A)=1/2 c) P(A)=1/4 d) P(A)=2/4

7.- If we flip two coins, what is the probability of the event A={at least one head}?

 a) P(A)=1/3 b) P(A)=2/3 c) P(A)=1/2 d) PA)=3/4

8.- If we flip two coins, what is the probability of the event A={exactly one head}?

 a) P(A)=3/4 b) P(A)=1/2 c) P(A)=2/3 d) None of them

9.-If we roll two dices, what is the probability of the event A={the addition is 10}?

 a) P(A)=2/21 b) P(A)=1/12 c) P(A)=2/36 d) P(A)=1/18

10.- If we roll two dices, what is the probability of the event A={at least a 2}?

 a) P(A)=11/36 b) P(A)=6/36 c) P(A)=12/36 d) P(A)=10/36