Probability

A bag contains 5 blue marbles, 4 red marbles, and 3 orange marbles. Mrs. Cox picks one without looking, replaces it and picks another one. What is the probability that she picks two that are not orange? 

• 9/16
• 3/4
• 9/144
• 5/16

You have a bag of 17 marbles.  Four are blue, 6 are green, 2 are red, and the others are yellow.  What is the probability of drawing a green marble, putting it aside, and then drawing another green marble?

• 15/136
• 30/289
• Other

You have a bag of 17 marbles.  Four are blue, 6 are green, 2 are red, and the others are yellow.  What is the probability of drawing a red marble, putting it aside, and then drawing a green marble?

• 1/136
• 2/17
• 3/68

A chorus has 50 girls and 35 boys. If two are chosen at random to sing a duet, what is the probability that both will be boys? HINT: You can not have the same person twice in a duet 

• 1/6
• 7/17
• 3/8
• 13/25

The letters that form the word ALGEBRA are placed in a bowl.

What is the probability of choosing a letter that is NOT “A”?

• 0%

• 100%

A ten sided die is rolled.

P (3 or 5)

• 3/10

• 1/5

• 1/10

• 25%

A box has 3 limes, 5 grapes, and 2 oranges.

P (NOT lime)

• 3/10

• 30%

• 7/10

• Answer Not Here

A box has 6 red pens, 8 black pens, 2 blue pens, and 4 purple pens.

P(NOT red or blue)

• 3/5

• 2/5

• 3/10

• 7/10

You roll a six sided die. What is the probability of rolling an even number three times in a row? 

• 3/100
• 1/2
• 1/6
• 1/8