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

2/5

Step-by-step 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.

P (not purple) = 2/5

Step-by-step 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