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Posted by on Wednesday, March 13, 2013 at 5:31pm.

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 - , Wednesday, March 13, 2013 at 5:51pm

    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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