The six faces on a number cube have the numbers from 1 to 6 shown on them. If you roll one number cube, your chances of rolling the number 5 are 1 in 6 or 1/6. If you roll two number cubes, your chances of rolling a 5 increase. You would think that your chances would be 1/6 for each number cube, or 1/6 + 1/6 or 1/3 when you roll two. The more number cubes that you roll, the better your chances become. For example, you might think that when you roll six number cubes, your chances of rolling a 5 are 1/6 x 6, or 1. But a probability of 1 means that you would always roll a 5 when you roll six number cubes. You should know that this is not true. What went wrong?
Look over the assumptions that were made to find one or more that were wrong. Then show how or why it or they were wrong. -- I've been rereading and trying this problem for 45 minutes now but am completely stumped. Could someone please help me out?
2007-02-07
11:41:03
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4 answers
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asked by
Anonymous