CW - Probability

A bag contains 2 blue marbles, 3 black marbles, and 5 red marbles. If Ms. Mel pulls two marbles without replacement, what is the probability of them both being blue? 

• 1/45
• 1/5
• 1/20
• 2/5

Each of the letters in MATHEMATICS are on separate cards, face down on a table.  If you pick a card at random, and then another card without replacement what is the probability that both cards will be a vowel? 

• 4/11
• 16/121
• 7/21
• 6/55

A magician is doing a card trick using a standard deck of cards. What is the probability that he will pull a jack, followed by a queen without replacement?

• 1/13
• 4/663
• 4/13
• 1/104

A bag contains ten black bows, twenty white bows, and 5 grey bows. If Michelle picks one without looking, what is the probability she chooses a black, white, and then grey bow? Assume she puts the bow back each time. 

• 8/343
• 35/100
• 4/257
• 3/49

You roll a standard die three times. What is the probability of rolling an even number each time? 

• 3/100
• 1/2
• 1/6
• 1/8

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

• 9/16
• 3/4
• 9/144
• 5/16

• 1/15
• 2/15
• 3/31
• 1/5

Suppose you write the numbers 1 to 10 on separate index cards. You randomly choose one card, place it back in the set, and then randomly choose another card. What is the probability that the first card you choose has a 1 on it or the second card has a 2 on it?

• 1/5
• 2/5
• 1/100
• 19/100

What is the probability you select a teen given that the person likes chocolate?

• .112
• .267
• .164
• .056

Given the person is a child, what is the probability they would pick neither?

• .26
• .195
• .286
• .214