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7th Grade Math

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Stacy has a spinner (1-4) and a number cube (1-6). After spinning and rolling the number cube, she will add the two numbers.

What is the probability that the sum of the numbers from the spinner and number cube will be 3 or 4?

  • 7th Grade Math - ,

    ways to get 3 or 4
    1,2;
    1,3
    2,1;
    2,2
    3,1

    probability= 5ways*1/4*1/6=5/24

    another way.
    prob= prob1,2or3+prob2,1or2, +prob3,1
    = 1/4*2/6+1/4*2/6 + 1/4*1/6
    =1/4(5/6= 5/24

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