A game includes spinning a spinner with numbers 1–5 and then rolling a number cube with numbers 1–6.What is the probability of getting an even number on both?

1 answer

To find the probability of getting an even number on both the spinner and the number cube, we first need to identify the even numbers on each.

Spinner (numbers 1–5):

The even numbers are:

  • 2
  • 4

Total even numbers on the spinner: 2
Total numbers on the spinner: 5

Probability of getting an even number on the spinner: \[ P(\text{even on spinner}) = \frac{\text{number of even outcomes}}{\text{total outcomes}} = \frac{2}{5} \]

Number Cube (numbers 1–6):

The even numbers are:

  • 2
  • 4
  • 6

Total even numbers on the number cube: 3
Total numbers on the number cube: 6

Probability of getting an even number on the number cube: \[ P(\text{even on cube}) = \frac{\text{number of even outcomes}}{\text{total outcomes}} = \frac{3}{6} = \frac{1}{2} \]

Combined Probability:

To find the probability of both events happening (getting an even number on both the spinner and the number cube), we multiply their individual probabilities: \[ P(\text{even on both}) = P(\text{even on spinner}) \times P(\text{even on cube}) = \frac{2}{5} \times \frac{1}{2} \] \[ P(\text{even on both}) = \frac{2 \times 1}{5 \times 2} = \frac{2}{10} = \frac{1}{5} \]

Thus, the probability of getting an even number on both the spinner and the number cube is \(\frac{1}{5}\).