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The set S has the property that if a is in S, then a squared + a is also in S. What set could be S? The answer is {1,0}. How do you get this answer? What numbers squared are itself? one and zero But what exactly is a set and what
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1. find the square root of 25 answer 5 2. find the median of the following set of numbers 33,72,23,27,77,68,85 answer 68 3. find the mean of the following numbers 13, 15,18,18,18,19,22,26,28,33 answer 21 4. find the mode
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