|= 23||= 36||= ?||= ?|
Each traffic sign stands for a number. Some of the sums of rows or columns are shown. What numbers might the signs stand for?
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|= 9||= 4|
|= 7||= 3|
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Numbers and the Making of Us
I initially heard this book described on the Grammar Girl podcast and immediately went to find out more about it. I now have it on my Christmas present wish list and am looking forward to receiving a copy (hint!).
"Caleb Everett provides a fascinating account of the development of human numeracy, from innate abilities to the complexities of agricultural and trading societies, all viewed against the general background of human cultural evolution. He successfully draws together insights from linguistics, cognitive psychology, anthropology, and archaeology in a way that is accessible to the general reader as well as to specialists." more...
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The answer to this puzzle is not 12. What is it?
The following puzzle has been doing the rounds on Facebook. I have tried to find the source of this image but have been unsuccessful. If you know where it comes from please let me know. No copyright infringement is intended.
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