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

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