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- The table summarizes the distribution of color and shape for 100 tiles of equal area. Red Blue Yellow Total Square 10 20 25 55 Pentagon 20 10 15 45 I I I I I I Total 30 30 40 100 If one of these tiles is selected at random, what is the probability of selecting a red tile? (Express your answer as a decimal or fraction, not as a percent.) -
Correct answer: 100 (parsed from the explanation — this source omits an answer key for this item)
Explanation
3 The correct answer is . It’s given that there are a total of 100 tiles of equal 10 area, which is the total number of possible outcomes. According to the table, there are a total of 30 red tiles. The probability of an event occurring is the ratio of the number of favorable outcomes to the total number of possible outcomes. 30 3 By definition, the probability of selecting a red tile is given by , or . Note that 100 10 3/10 and .3 are examples of ways to enter a correct answer.
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