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Paid $80 for a used calculator at a garage sale and it does one weird thing that saved my math grade
I grabbed a TI-83 from a driveway sale in Mesa for $80 because mine broke two days before a stats final, and this one had a weird program saved in it that showed step by step z scores. I still don't know who wrote it or why, but that saved me from bombing the whole test. Anyone else ever buy used gear and find old junk on it that turned out useful?
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