There is a 30% probability that Morris will be in the tutoring room when it is o

There is a 30% probability that Morris will be in the tutoring room when it is open. What are the odds for Morris being there?
Give a reduced answer using ratio (:) notation.
There is a 30% probability that Morris will be in the tutoring room when it is open. What are the odds against him being there?
Give a reduced answer using ratio (:) notation.
The odds of rolling a three with a regular 6-sided die are 1:5.     Number of threes:?
The odds of rolling a three with a regular 6-sided die are 1:5.    Number of threes:?
The odds of rolling a three with a regular 6-sided die are 1:5.    Total #?
The odds of rolling a three with a regular 6-sided die are 1:5.
What are the odds against rolling a three?
Use the ratio (:) notation.
The odds of rolling a three with a regular 6-sided die are 1:5.
What is the probability of rolling a 3?
Answer should be a reduced fraction.
The odds of rolling a three with a tetrahedron shaped die are 1:3. 
What are the odds against rolling a three?  _____3:1  
What is the probability of rolling a 3?  _________

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