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Tamlin collects action figures and has 2 more female action figures than male action figures. He chooses two action figures randomly. Write and simplify an expression that represents the probability that Tamlin will pick two female action figures without replacing the first action figure. Let x be the number of male action figures

(x+2)/2(2x+1)
(x+1)/x
(2x+3)/2(x+1)(2x+1)
x/2(2x+1)

User Pigueiras
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Final answer:

To find the probability of selecting two female action figures without replacement when Tamlin has 2 more females than males, we multiply the probability of selecting a female on the first draw with the probability of selecting a female on the second draw, after one female has been removed.

Step-by-step explanation:

The student has asked to simplify the expression that represents the probability of randomly selecting two female action figures from Tamlin's collection, knowing that Tamlin has 2 more female action figures than male action figures, and not replacing the first action figure chosen. Let x represent the number of male action figures Tamlin has. Therefore, Tamlin has x + 2 female action figures.

The probability that the first action figure chosen is female is (x + 2) divided by the total number of action figures, which is x + (x + 2) or (2x + 2). The probability that the second action figure chosen is also female, after not replacing the first, is (x + 1) (since one female has already been taken out) divided by the total minus one, which is (2x + 1).

The combined probability of both events occurring is the product of the two separate probabilities:

  • Probability of first female action figure: (x + 2) / (2x + 2)
  • Probability of second female action figure: (x + 1) / (2x + 1)
  • Combined probability: [(x + 2) / (2x + 2)] Ă— [(x + 1) / (2x + 1)]

Upon simplifying the expression, we will cancel common factors and get the simplified probability expression for selecting two female action figures without replacement.

User LEJ
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