Marble Probability Calculator

Drawing colored marbles from a bag

Calculator Dice Coins Marbles Cards Learn

Single Marble Draw

The Setup: A bag contains marbles of different colors. You reach in without looking and draw one marble at random. What's the probability of getting a specific color?

This is the simplest probability scenario — each marble is equally likely to be drawn.

Interactive Examples

Click a scenario to see the probability calculation:

Key Insight

For single draws, probability is simply the ratio of target marbles to total marbles. Each marble is equally likely to be drawn, making this a uniform distribution.