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Why are Casio graphing calculators much cheaper than Texas Instruments? TI-84+ is usually 150~200, but most Casio calculators (like FX-9860 series) are usually only ~100. Is there any difference? - Quora
I've had this Texas Instruments scientific calculator since 6th grade, it's now getting me through finals in my first semester of college. : r/BuyItForLife
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