### Video Transcript

If I roll a regular six-sided die, what is the probability that the score is an odd number?

A regular six-sided die is a cube with six faces. They’re numbered one, two, three, four, five, and six. An odd number is any integer not divisible by two. In this case, the odd numbers are one, three, and five. The probability of any event occurring can be written as a fraction, the number of successful outcomes divided by the number of possible outcomes.

In this question, there are three successful outcomes, the three odd numbers. And there is six possible outcomes, the numbers one to six. The probability when rolling a regular six-sided dice that the score is an odd number is three-sixths or three out of six.

Both three and six are divisible by three. Therefore, this fraction could be simplified to one-half. Three divided by three is equal to one. And six divided by three is equal to two. The probability that the score is odd is equal to one-half or one in two.