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Probability Worksheets - Page 24

Probability Worksheets
  • Page 24
 231.  
A teacher chooses a student at random from a class of 50 boys. What is the probability that the student chosen is a boy?
a.
1 2
b.
1 50
c.
1


Answer: ()


Correct answer : (4)
 232.  
What is the probability of getting a sum of 4 when two dice are rolled?
a.
1 10
b.
1 12
c.
1 4
d.
1 11


Answer: (b)


Correct answer : (2)
 233.  
A ball is chosen at random from 10 black balls. What is the probability of getting a black ball?
a.
1 2
b.
1
c.
1 4
d.
1 5


Answer: (b)


Correct answer : (2)
 234.  
There are 11 cone ice creams kept in the refrigerator. What is the probability of Lindsay choosing one out of them?
a.
3
b.
1 11
c.
1 4
d.
1


Answer: (b)


Correct answer : (2)
 235.  
There are two 'true or false' type of questions on a test paper. Pick the tree diagram that represents all the possible answers to these questions.

a.
Tree diagram 4
b.
Tree diagram 1
c.
Tree diagram 2
d.
Tree diagram 3


Answer: (c)


Correct answer : (3)
 236.  
A bag contains 3 yellow balls and 4 pink balls. Kay picked two balls one after the other. Which tree diagram shows all the possible outcomes?

a.
Tree diagram 2
b.
Tree diagram 3
c.
Tree diagram 4
d.
Tree diagram 1


Answer: (b)


Correct answer : (2)
 237.  
What is the probability that Mary will select a blue marble from the marble jar?
Color of the marbleNumber of marbles
Yellow15
Green11
Red14
Blue13


a.
13 53
b.
13 28
c.
15 28
d.
15 53


Answer: (a)


Correct answer : (1)
 238.  
There are 17 yellow balls, 17 green balls, and 17 purple balls in a bag. Choose the fraction that expresses the probability of selecting a yellow ball from the bag.
a.
3 4
b.
2 3
c.
1 4
d.
1 3


Answer: (d)


Correct answer : (4)
 239.  
A card is selected from the deck of 52 cards. Use a fraction to express the probability of selecting a card from the black suit.
a.
1 4
b.
1 3
c.
1 2
d.
1 5


Answer: (c)


Correct answer : (3)
 240.  
4 mathematics, 3 science, and 6 French books are arranged on a shelf. Use a fraction to express the probability of picking a mathematics book from the shelf.
a.
1 3
b.
5 13
c.
1 13
d.
4 13


Answer: (d)


Correct answer : (4)

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