Practice Page
Directions: Read carefully. Choose the best answer.
A series of ten colored balls are placed in a box for storage. The colors are:
yellow (Y), blue (B), orange (O), and
green (G).
The balls are of equal shape and size.
The following questions pertain to these colored balls.
 PPBALLS
1.
What is the probability of picking one ball, at random, from the box that will be orange in color?
Choose:
20%
 10% 40% 30%

2.
Which colored ball has the greatest probability of being chosen at random from the box?
Choose:
blue
 green yellow orange

3.
What is the probability of picking either a green ball or a blue ball, at random from the box?
Choose:
20%
 30% 40% 50%

4.
Which colored ball has the lowest probability of being chosen at random from the box?
Choose:
blue
 green yellow orange

5.
What is the probability of not picking a yellow ball at random from the box?
Choose:
20%
 40% 50% 60%

 

 

The 50 tickets that were prepared for a private concert, were numbered from 1 to 49 along with one VIP ticket. The VIP ticket would allow the holder to visit with the musicians after the concert.
The tickets were placed in envelopes and randomly sold to concert goers.
The following questions pertain to these tickets, assuming all tickets are still available when these questions are asked..
 VIP
6.
What is the probability of buying the one VIP ticket?
Choose:
0.02%
 0.2% 2% 20%

7.
If you buy 10 tickets, what is your chance of buying the VIP ticket?
Choose:
0.02%
 0.2% 2% 20%

8.
What is the probability of buying a ticket with a number less than twenty?
Choose:
35%
 38% 40% 45%

9.
What is the probability of buying a ticket with a number greater than or equal to 10 but less than 25?
Choose:
40%
 30% 35% 37½%

10.
You find out that 20 of the tickets have been sold and no one has yet bought the VIP ticket. If you now buy a ticket, what is your probability of buying the VIP ticket?
Choose:
0.03%
 0.3% 3.3% 30%

 

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