Difference between revisions of "2013 CEMC Gauss (Grade 7) Problems/Problem 4"
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Latest revision as of 12:47, 20 January 2024
The value of 1 + 1 − 2 + 3 + 5 − 8 + 13 + 21 − 34 is
Solution
We can group it by three to give (1+1-2)+(3+5-8)+(13+21-34) which simplifies to (0)+(0)+(0)=