Final answer:
Without knowing the total number of marbles in the container, we cannot calculate the exact probabilities. However, based on the given information, the probabilities of selecting a white or gray marble would be closer to 0, while the probability of selecting a black marble would be closer to 1.
Step-by-step explanation:
To determine the probabilities of selecting marbles of different colors from the container, we need to know the total number of marbles in the container. Since the total number of marbles is not given in the question, we cannot calculate the exact probabilities.
However, we can make predictions based on the given information. If we assume that there are a relatively large number of marbles in the container, then the probability of selecting a white marble would be closer to 0 because there are only 1 white marble out of a total of 7 marbles.
The probability of selecting a gray marble would be closer to 0 because there are only 2 gray marbles out of a total of 7 marbles. The probability of selecting a black marble would be closer to 1 because there are 4 black marbles out of a total of 7 marbles.