Christine randomly pulls a marble from a bowl. There are 140 marbles in the bow, of which 80 are black, 28 are green, and the rest are blue. Use words and numbers to describe the probability that she will pull a red marble out of the bowl. Remember to show your work.
The total number of marbles in the bowl is 140.
The number of black marbles is 80 and the number of green marbles is 28. Therefore, the number of blue marbles is:
140 - 80 - 28 = 32
The probability of pulling a red marble out of the bowl is:
Number of red marbles / Total number of marbles
= 0 / 140
= 0
Therefore, the probability of Christine pulling a red marble out of the bowl is 0.