The probability of drawing a red marble from a bag with 4 red and 2 blue marbles is what?

The probability of drawing a red marble from a bag with 4 red and 2 blue marbles is what?

• A. 1/3
• B. 3/5
• C. 2/3
• D. 4/7

Answer: (C)

Probability is the ratio of favorable outcomes to the total number of possible outcomes when every outcome is equally likely. There are four red marbles and six marbles in total, so the chance of drawing a red marble is 4/6, which simplifies to 2/3. That means about two out of every three draws would yield a red marble. If the counts were different, the fraction would reflect those counts—for example, two red marbles out of six would give 1/3, or four red out of seven would give 4/7.

Probability is the ratio of favorable outcomes to the total number of possible outcomes when every outcome is equally likely. There are four red marbles and six marbles in total, so the chance of drawing a red marble is 4/6, which simplifies to 2/3. That means about two out of every three draws would yield a red marble. If the counts were different, the fraction would reflect those counts—for example, two red marbles out of six would give 1/3, or four red out of seven would give 4/7.