Probability of Selecting a Cube

Hard Data Analysis And Probability Basic Probability

A box contains 6 red cubes, 4 green cubes, and 10 blue cubes. You randomly select one cube from the box. If you want to know the probability of selecting either a red or a green cube, how can you calculate this probability?

The probability is $$\frac{6}{20}$$.

The probability is $$\frac{1}{5}$$.

The probability is $$\frac{1}{2}$$.

The probability is $$\frac{10}{20}$$.

Hint

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