Question

You have a jar of 20 jellybeans with 4 red beans, and you take out 1 red jellybean. Now, after taking out this bean, what is the new probability that you will pick a red jellybean out of the jar?

Answer 1

After removing one red jellybean from a jar that initially had 20 jellybeans including 4 red ones, the new probability of picking another red jellybean is 3 out of 19, as there are 3 red jellybeans left among the 19 remaining jellybeans.

Step-by-step explanation:

Initially, there are 20 jellybeans with 4 red ones. After taking out one red jellybean, there are now 3 red jellybeans left out of the remaining 19 jellybeans in the jar. Therefore, the new probability of picking a red jellybean is the number of red jellybeans (3) divided by the total number of jellybeans left (19).

The calculation for the probability is as follows:

1. Count the red jellybeans left, which is 3 after one is taken out.
2. Count the total jellybeans left, which is now 19.
3. Divide the number of red jellybeans by the total number of jellybeans left to get the new probability, which is P(R) = 3/19.