Question

Patrick rolls a die. What is the probability that he rolls an 1, 3 or 5?

Answer 1

The total possible outcomes of a dice are: 1,2,3,4,5 and 6.

There are 6 possible outcomes, all with equal probability.

Then, as all the outcomes have the same probability, we have to calculate what is the probability of having one ot three specific outcomesout of the possible 6 outcomes.

We can calculate this as:

`P=\frac{\#\text{success outcomes}}{\#\text{possible outcomes}}=(3)/(6)=(1)/(2)=0.5=50\text{ \%}`

Answer: P(1,3, or 5) = 1/2 = 0.5 = 50%