Probability Test Corrections

How many different four digit pass codes can you have if the first digit can not be zero or one and digits can repeat?

• 800
• 6
• 720
• 336

A race has 8 participants. How many ways can the top five finishers be filled?

• 6720
• 56
• 40320
• 120

How many groups of five books can you choose from nine books on a shelf?

• 126
• 15120
• 362880
• 120

You choose a marble from a bag containing five blue marbles, three orange marbles, six purple marbles, and seven yellow marbles. What is the odds that you do not pick a purple marble?

• 7:3
• 7:20
• 3:7
• 3:20

Letter tiles that spell out Springville are placed in a cup. What are the odds that you draw an S or an L?

• 3:8
• 3:11
• 1:10
• 2:9

The probability that you win a game is 5/12. What is the odds that you do not win the game?

• 7:5
• 7:12
• 5:7
• 7:17

A jar contains five pennies, eight dimes, three nickels, four quarters, two half dollars, and three dollar coins. You draw two coins without replacement. What is the probability that you draw a half dollar and then a dollar coin?

• 1/100
• 6/625
• 1/5
• 41/200

A bowl contains tiles numbered 1 to 20. What is the probability that you draw an even number or a multiple of 5?

• 3/5
• 7/10
• 1/10
• 1/8

There is a 70% chance of rain on Wednesday and a 40% chance on Thursday. What is the probability that it does not rain either day?

• 18%
• 28%
• 12%
• 42%

There are 30 marbles in a bag. The probability of drawing a green marble is 1/15. The probability of drawing a purple marble is 1/6. What is the probability of drawing a green marble and then a purple marble?

• 1/87
• 1/90
• 7/30
• 104/435