SOLUTION: There are 20 colored pencils in a box: 4 red, 5 green, 10 blue, and 1 black. You pick a pencil without looking. What is the sum of the probability of picking a red pencil and the p

Question 1012854: There are 20 colored pencils in a box: 4 red, 5 green, 10 blue, and 1 black. You pick a pencil without looking. What is the sum of the probability of picking a red pencil and the probability of picking a black pencil?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Picking a red pencil.

Picking a black pencil.

The sum of those values is,

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