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Math

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If you toss a pair of dice 1,000 times, how many times would you expect to get a sum of 12 as the result?

1.)about 12 times
2.)about 27 times
3.)about 36 times
4.)about 100 times

The lesson doesn't show me how to work this. Whats the formula?

  • Math -

    the prob of getting 12 when tossing 2 dice = 1/36

    so the number expected doing this 1000 times
    = 1000 x 1/36 = 250/9
    = 27.777

    so it would happen approx 28 times.

  • Math -

    If you toss 3 coins 10,000 times, how many times would you expect that exactly 2 heads appear?

  • Math -

    Tossing a die= 1/36 and so, the number expected of doing this 1000= 1/36 *1000=27.77777778 Approximately 28

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