08 Odds for Algebra

If the odds in favor of an Event are a:b, the probability of that Event is...

• a/(a+b)
• a/(a-b)
• b/(a+b)
• b/(a-b)

If the odds against an Event are a:b, the probability of that Event is...

• a/(a+b)
• a/(a-b)
• b/(a+b)
• b/(a-b)

If the probability of an Event E is a/b, the odds in favor of that Event are...

• a:(a+b)
• a:(b-a)
• b:(a+b)
• b:(a-b)

If the probability of an Event E is a/b, the odds against that Event are...

• a:(a+b)
• a:(a-b)
• b:(a+b)
• (b-a):a

In a deck of 52 playing cards what are the odds in favor of drawing a 2, 3, 4, or 5 of diamonds at random?

• 1:12
• 12:1
• 1:13
• 13:1

Tags

CCSS.HSS.CP.A.1

You roll a pair of fair dice. What are the odds against rolling a sum of 10? 

• 1:12
• 1:11
• 12:1
• 11:1

You roll a pair of fair dice. What are the odds in favor of rolling a sum of 12? 

• 1:36
• 1:35
• 1:18
• 1:12

Suppose this Accounting Monster really does generate random digits. What are the odds against Dilbert seeing this particular result for six digits?

• 999,999:1
• 60:1
• 59:1
• 1,000,000:1

If all the letters in the alphabet were placed in a bowl, what are the odds against pulling out an “A”, “H”, “R” or “X”? 

• 2:11
• 11:2
• 2:13
• 13:2

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.CP.B.7

What are the odds in favor of randomly selecting a dime from a dish containing 11 pennies, 6 nickels, 5 dimes, and 3 quarters? 

• 4:1
• 1:4
• 1:5
• 5:1

Tags

CCSS.HSS.CP.A.1