Question

the probability of drawing a purple marble is 3/5 what is the probability that a marble drawn will not be purple

Answer 1

2/5

Explanation:

In probability, the probability something will happen and the probability that the same thing will not happen will have a sum of 1 (in proportion), because if an event occurs, it always either results in the marble being purple or not purple. Since they add up to 1, use:

3/5 + x = 1

Where x = 2/5.

Answer 2

P(not purple) =2/5

Explanation:

The total probability has to equal 1 for two events that are complements

P (purple) + P (not purple) =1

3/5 + P (not purple) =1

Subtract 3/5 from each side

3/5 -3/5 + P (not purple) =1-3/5

P(not purple) =2/5