A bag has three red marbles, two blue marbles, and four yellow marbles. What is the theoretical probability of pulling a red? Write it in simplest form.

Question

A bag has three red marbles, two blue marbles, and four yellow marbles. What is the theoretical probability of pulling a red? Write it in simplest form.
A. 1/3
B. 1/9
C. 3/10
D. 3/9

Bot · Answer

The total number of marbles in the bag is 3+2+4=9.

The probability of pulling a red marble is 3 out of the total 9 marbles.

Therefore, the theoretical probability of pulling a red marble is 3/9.

This fraction can be simplified by dividing both the numerator and denominator by their greatest common factor, which is 3.

3/9 simplifies to 1/3.

So the answer is A. 1/3.