a bag has 6 red marbles and 4 blue What is the probability of NOT getting a red marble?

Answer 1

To find the probability of NOT getting a red marble, we can follow these steps:

1. Determine the total number of marbles:

   • There are 6 red marbles and 4 blue marbles.
   • Total marbles = 6 red + 4 blue = 10 marbles.

2. Determine the number of favorable outcomes (not getting a red marble):

   • The number of blue marbles (which represent not getting a red marble) is 4.

3. Calculate the probability: \[ \text{Probability of NOT getting a red marble} = \frac{\text{Number of blue marbles}}{\text{Total number of marbles}} = \frac{4}{10} = \frac{2}{5}. \]

Therefore, the probability of NOT getting a red marble is \(\frac{2}{5}\) or 0.4.