Respuesta :

The probability is given by:

P= # of favorable outcomes / total number of outcomes

First, let us find the # favorable number of outcomes, this means the not blue cubes:

7 red cubes

3 green cubes

2 green cubes

Then, 12 not blue cubes

Now, the total number of cubes are:

7 red cubes

3 green cubes

2 green cubes

4 blue cubes

Then, 7+3+2+4 =16 total cubes

Using the equation:

P(selected a cube will not be blue) = 12 / 16 = 3/4

Hence, the correct answer is the third option

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