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Question:


maganda123

A drawer contains 3 pencils, 4 markers,and 4 pens. Items are drawn randomly one at a time and are not replaced. What is the p(pen then pencil)?

this is a math question.

please help me answer this question.

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Posted by maganda123 on Monday November 10, 2008 at 5:52 PM and tagged with math, probablility.

Answers:


  1. lynn30k Teacher
    High School - 10th Grade

    The probability of picking a pen first is 4/11. If that occurs, the probability of then picking a pencil is 3/10 because there are only 10 things left in the drawer. The probability of both those things happening is the product of the two, so 12/110 or about 10.9%.

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    Posted by lynn30k on Monday November 10, 2008 at 6:15 PM