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Pre-Algebra 7 Online
OpenStudy (anonymous):

Use the table. Style Color regular light blue loose fit indigo boot cut washed slim fit black blue a. How many possible pairs of jeans are there if each pair has one style and one color? b. Suppose you have one pair of jeans of each possible style and color in the table. What is the probability of choosing a pair of black jeans at random?

OpenStudy (anonymous):

Answer Choices! A. 30 pairs; 1/4 B. 9 pairs; 1/20 C. 20 pairs; 1/5 D. 4 pairs; 1/4 I believe it would be B

OpenStudy (anonymous):

The answer is C. This is because there are 4 possible styles times 5 possible colors which equals 20 pairs. To find the probability you take the black color with each one of the style options, this means you have 4 black options. Next you make it into a ratio. 4 options/20 available so the ratio is 4/20 which is reduced to 1/5.

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