Mathematician Questions
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I need to bake three 13x9 cakes but I only have 11x15, 8x11, and 9.25x13.25. What do I do?
13x9=117 But I need three so 39x9=351 13x27=351 11x15=165 8x11=88 9.25x13.25=122.5625 165+88+122.5625=375.5625
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Is there a positive integer whose repeat is a perfect square? If so, how many such integers exist?
The repeat of a positive integer is obtained by writing it twice in a row (so, for example, the repeat of 2017 is 20172017)
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