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Probability and conditional probability SAT question

Math · Problem-Solving and Data Analysis · Easy · Answer it here, explanation included.

There are buttons in a bag: white buttons, orange buttons, and brown buttons. If one of these buttons is selected at random, what is the probability of selecting a white button?

ExplanationShow

Choice B is correct. It’s given that there are buttons in a bag and of the buttons are white. If one button from the bag is selected at random, the probability of selecting a white button is the number of white buttons in the bag divided by the total number of buttons in the bag. Therefore, if one button from the bag is selected at random, the probability of selecting a white button is .

Choice A is incorrect. This is the probability of selecting an orange button from the bag.

Choice C is incorrect. This is the probability of selecting a brown button from the bag.

Choice D is incorrect. This is the probability of selecting a button that isn't white from the bag.

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