Algebra 1

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Can someone please help me understand this. This is not graded or anything I just want to know how to do this.
- Chloe rolls two-sided number cubes and adds the numbers showing on the cubes. What is the probability that the sum of the number cubes is even or five?

  • Algebra 1 -

    just count the ways the event can happen
    even:
    11 13 15
    22 24 26
    31 33 35
    42 44 46
    51 53 55
    62 64 66
    So, there are 18 ways to roll an even.

    There are 4 ways to get a five: 14 23 32 41

    So, P(even or 5) = 20/36

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