Home > Algebra > Theoretical and Experimental Probability

A jar contains 5 red marbles, 3 green marbles, 2 yellow marbles, and 1 blue marbles. How do you find the probability of a green or yellow marble?

Answer 1

#=>P_"green or yellow" = 5/11#

Probability here is the chance of selection out of a total. So, we need to first find the total number of marbles.

#"total" = 5+ 3 +2+1=11#

So there are #11# marbles total. The probability that we pick one of the #3# green marbles out of the #11# is simply that ratio:

#P_"green" = 3/11#

Same idea for yellow:

#P_"yellow" = 2/11#

The probability of picking either of these colors is simply the sum of their probabilities.

#P_"green or yellow" = P_"green" + P_"yellow" = 3/11 + 2/11 = color(blue)(5/11)#

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Nathan Axel

To find the probability of selecting a green or yellow marble from the jar, divide the total number of green and yellow marbles by the total number of marbles in the jar. Then, simplify the fraction if possible.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.