What is the difference between the Casio FX‑991ES and 991ex? Which one should I prefer for my VTU exams? - Quora
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Casio FX-991ES Plus Scientific Calculator. Available in 1st and 2nd Edition. Casio FX-991ES PLUS. Casio FX-991ES+. Local Singapore Stock and Seller. 1 Year Warranty. Express Delivery. | Lazada Singapore
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