181k views
0 votes
A bag contains:• 3 red marbles• 2 orange marbles• 1 yellow marble• 4 green marblesRico will randomly choose a marble. Then he will put itback and randomly choose another marble. What isthe probability that he will choose a red and then anorange marble?

1 Answer

2 votes

The probability is given by the following formula:

Probability = number of favorable outcomes / total number of outcomes

The total number of outcomes is 10, 3 of the initial number of marbles are red and 2 of them are orange.

The probability of getting a red marble in the first draw is:

Probability = 3/10

The probability of getting an orange marble in the second draw is:

Probability = 2/10 = 1/5

the probability that he will choose a red and then an orange marble can be calculated by multiplying the probabilities that we found, then we get:

Probability = 3/10 × 1/5 = 3/150 = 1/50

Then, the answer is 1/50

User SlyBeaver
by
8.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories