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Probhelp
Probhelp asked in Science & MathematicsMathematics · 1 decade ago

If you spin the wheel 3 times, what's the probability that it will land on 70% the first 2 times?

A spin wheel is marked with a 30% portion and a 70% portion. what is the probability that it will land on 70% the first two times out of 3 spins?

5 Answers

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  • None
    Lv 7
    1 decade ago
    Favorite Answer

    The probability of landing on the 70% area in any spin is 0.7. The probability of two such spins following each other is 0.7 x 0.7 = 0.49. The third spin does not matter

    All the probabilities for the first two spins are:

    P(70,70) = 0.49

    P(70,30) = 0.21

    P(30,70) = 0.21

    P(30,30) = 0.09

    Add them together and you get P(all) = 1.0, an unsurprising outcome

  • hodapp
    Lv 4
    4 years ago

    Spinning Wheel Probability

    Source(s): https://owly.im/a9Mbd
  • Bolaji
    1 decade ago

    the 1st time it landed on 70% .'. probability is 1/2

    the 2nd time it landed on 70% .'. probability is 1/2

    the 3rd time it landed on any portion.'. probability is 2/2

    so 1/2x1/2x2/2=1/4

  • Victor L
    Lv 4
    1 decade ago

    (0.7)^2 time (0.3)^(3-2)

    it is the best answer,please chose it

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  • Mike T
    Lv 7
    1 decade ago

    0.70 * 0.70 = 0.49

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