Probability Practice #1

A couple has three children.  Each combination is equally likely and gives the following sample space.  S = {BBB, GGG, BGG, GBG, GGB, GBB, BGB, BBG}.  What is the probability that the couple has exactly two girls? 

• 3/8
• 2/8
• 4/8
• 1/8

A couple has three children.  Each combination is equally likely and gives the following sample space.  S = {BBB, GGG, BGG, GBG, GGB, GBB, BGB, BBG}.  What is the probability that the couple has at least two boys? 

• 3/8
• 1/8
• 4/8
• 2/8

When rolling 1 six sided die, what is the probability of rolling a number greater than 4? 

• 4/6
• 3/6
• 2/6
• 1/6

When rolling two dice, what is the probability of getting a sum of 7?

• 8/36
• 5/36
• 6/36
• 4/36

When rolling two dice, what is the probability of getting a sum of a 3 or a 4? 

• 6/36
• 5/36
• 4/36
• 3/36

When rolling two dice, what is the probability of rolling an even number? 

• 18/36
• 16/36
• 10/36
• 14/36

When rolling two dice, what is the probability of getting a sum of 3 on the first roll and a sum of 5 on the second roll? 

• .012
• .009
• .006
• .015

What is the probability of choosing a King from a standard deck of cards? 

• 8/52
• 4/52
• 6/52
• 10/52

What is the probability of pulling a face card from a standard deck of cards? 

• 12/52
• 16/52
• 10/52
• 8/52

What is the probability of choosing a heart or a club from a standard deck of card? 

• 13/52
• 26/52
• 39/52
• 18/52