# Probability mcq:Aptitude

### Probability mcq:Aptitude

What is the probability of rolling a fair six-sided die and getting an even number?
a) 1/6
b) 1/2
c) 1/3
d) 2/3

A bag contains 5 red marbles , 3 blue marbles , and 2 green marbles. What is the probability of drawing a blue marble?
a) 1/10
b) 1/5
c) 3/10
d) 1/3

Two cards are drawn from a standard deck of 52 cards without replacement. What is the probability of drawing two hearts?
a) 1/13
b) 1/26
c) 1/39
d) 1/52

A jar contains 10 red balls, 5 blue balls, and 3 yellow balls. If a ball is randomly selected , what is the probability of it being red or blue?
a) 1/3
b) 2/3
c) 3/4
d) 4/5

In a deck of cards, what is the probability of drawing a face card (jack, queen, or king)?
a) 1/13
b) 3/13
c) 4/13
d) 1/4

A bag contains 6 red balls 4 green balls, and 5 blue balls . If a ball is randomly selected what is the probability, of it not being red?
a) 1/3
b) 4/5
c) 5/15
d) 10/15

Two dice are rolled. What is the probability of getting a sum of 7?
a) 1/6
b) 1/9
c) 1/12
d) 1/36

A box contains 8 red balls, 5 blue balls, and 4 green balls. Two balls are randomly drawn without replacement. What is the probability of drawing a red ball and then a blue ball?
a) 2/17
b) 8/51
c) 5/51
d) 4/51

In a class , there are 15 boys and 10 girls. If a student is selected at random what is the probability of selecting a girl ?
a) 1/2
b) 2/5
c) 3/5
d) 2/3

A fair coin is flipped three times. What is the probability of getting at least one head?
a) 1/8
b) 3/8
c) 1/2
d) 7/8

A bag contains 4 red marbles and 6 green marbles. If two marbles are drawn without replacement, what is the probability of drawing two green marbles?
a) 1/10
b) 1/5
c) 3/10
d) 3/5

In a deck of cards, what is the probability of drawing a spade or a club?
a) 1/13
b) 1/4
c) 1/2
d) 3/4

A bag contains 8 red balls and 4 green balls. If two balls are drawn with replacement, what is the probability of drawing two red balls?
a) 1/3
b) 1/4
c) 1/6
d) 1/9

Three cards are drawn from a standard deck of 52 cards without replacement. What is the probability of drawing three hearts?
a) 1/17
b) 1/26
c) 1/39
d) 1/52

In a bag , there are 5 red balls, 3 blue balls and 2 green balls. If a ball is randomly selected , what is the probability of it being red or blue?
a) 4/10
b) 1/2
c) 3/10
d) 7/10

A jar contains 6 red balls , 4 green balls, and 2 yellow balls. If a ball is randomly selected what is the probability of it not being red?
a) 1/3
b) 1/2
c) 2/3
d) 3/4

Two dice are rolled. What is the probability of getting a sum greater than 9?
a) 1/6
b) 1/9
c) 1/12
d) 1/36

A box contains 7 red balls, 5 blue balls, and 3 green balls. Two balls are randomly drawn without replacement. What is the probability of drawing a red ball and then a blue ball?
a) 7/45
b) 7/65
c) 5/45
d) 5/65

In a class , there are 20 boys and 15 girls . If a student is selected at random , what is the probability of selecting a girl?
a) 1/2
b) 1/3
c) 2/3
d) 3/5

A fair coin is flipped four times. What is the probability of getting exactly two heads?
a) 1/4
b) 3/8
c) 3/16
d) 1/2

A bag contains 3 red marbles and 5 green marbles. If two marbles are drawn without replacement, what is the probability of drawing two green marbles?
a) 1/16
b) 1/10
c) 2/7
d) 2/15

In a deck of cards, what is the probability of drawing a heart or a diamond?
a) 1/13
b) 1/4
c) 1/2
d) 3/4

A bag contains 6 red balls and 4 green balls. If two balls are drawn with replacement, what is the probability of drawing two red balls?
a) 1/6
b) 1/16
c) 1/36
d) 1/64

Three cards are drawn from a standard deck of 52 cards without replacement. What is the probability of drawing three spades?
a) 1/17
b) 1/26
c) 1/39
d) 1/52

In a bag , there are 4 red balls, 3 blue balls, and 2 green balls. If a ball is randomly selected , what is the probability of it being red or blue?
a) 7/9
b) 4/9
c) 5/9
d) 2/3

A jar contains 7 red balls, 4 green balls, and 3 yellow balls. If a ball is randomly selected, what is the probability of it not being red?
a) 1/3
b) 1/2
c) 3/4
d) 5/7

Two dice are rolled. What is the probability of getting a sum less than 4?
a) 1/6
b) 1/9
c) 1/12
d) 1/36

A box contains 6 red balls, 3 blue balls, and 2 green balls. Two balls are randomly drawn without replacement. What is the probability of drawing a red ball and then a blue ball?
a) 3/55
b) 1/10
c) 1/15
d) 1/5

In a class, there are 25 boys and 15 girls. If a student is selected at random, what is the probability of selecting a girl?
a) 1/2
b) 1/3
c) 2/3
d) 3/5