If there are 12 green pencils, 4 red pencils, 7 blue pencils, and 2 black pencils, what is the chance of picking a red pencil at random?
p(red) = (#red)/(#total)
To find the chance of picking a red pencil at random, we need to determine the probability of selecting a red pencil out of the total number of pencils available.
First, let's calculate the total number of pencils:
12 green + 4 red + 7 blue + 2 black = 25 pencils
The probability of randomly selecting a red pencil would be the number of red pencils divided by the total number of pencils:
Probability = Number of red pencils / Total number of pencils
Probability = 4 / 25
Therefore, the chance of picking a red pencil at random would be 4/25 or 16%.