A spinner has 10 equally sized sections, 2 are gray 8 are blue. The spinner is spun twice. What is t

Discussion in 'Calculator Requests' started by math_celebrity, Dec 9, 2019.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    A spinner has 10 equally sized sections, 2 are gray 8 are blue. The spinner is spun twice. What is the probability that the first spin lands on blue and the second lands on gray?

    P(blue) = Blue sections / Total Sections
    P(blue) = 8/10

    Reducing this using our simplified fraction calculator, we get:
    P(blue) = 4/5

    P(gray) = Gray sections / Total Sections
    P(blue) = 2/10

    Reducing this using our simplified fraction calculator, we get:
    P(gray) = 1/5

    We want the probability of blue,gray. Since each spin is independent, we multiply the two probabilities to get our answer:
    P(blue, gray) = P(blue) * P(gray)
    P(blue, gray) = 4/5 * 1/5
    P(blue, gray) = 4/25
     

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