Casio Scientific Calculator FX-991 ES PLUS

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Non-Programmable Scientific Calculator with 417 Functions Natural Textbook Display- Input and display fractions, powers, logarithms, roots, and other mathematical formulas and symbol just as they appear in textbooks List Based Stat-Data Editor for Easy Viewing and Statistical Calculation Probability, Calculus, Permutation Combination, Random Number Calculation features Table Function for Function exploration Colour coded keypad for easy key differentiation Dual Powered – Solar & Battery Solar powered when light is sufficient, battery powered when light is insufficient.