the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.
Another question on Mathematics
Mathematics, 21.06.2019 19:00
The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?
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