![Casio - fx-991S - - Scientific calculator - Casio fx991S - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA Casio - fx-991S - - Scientific calculator - Casio fx991S - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA](https://casio.ledudu.com/images/calculs/casio/boites/zoom/FX991S.jpg)
Casio - fx-991S - - Scientific calculator - Casio fx991S - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
![Casio fx-991ES Plus giving me weird results, is it faulty or can there be a setting I'm missing? : r/calculators Casio fx-991ES Plus giving me weird results, is it faulty or can there be a setting I'm missing? : r/calculators](https://i.redd.it/casio-fx-991es-plus-giving-me-weird-results-is-it-faulty-or-v0-5yk3pm8xiw091.jpg?width=1814&format=pjpg&auto=webp&s=f003c544e4715c7fa9310df4fe12f2ceeee39bf1)
Casio fx-991ES Plus giving me weird results, is it faulty or can there be a setting I'm missing? : r/calculators
![Casio FX-991MS Non-Programmable Scientific Calculator, 401 Functions | FX- 991MS-2 LINE Buy, Best Price. Global Shipping. Casio FX-991MS Non-Programmable Scientific Calculator, 401 Functions | FX- 991MS-2 LINE Buy, Best Price. Global Shipping.](https://microless.com/cdn/products/70d7ec74cfb826f3f45625e05cf7dfbc-hi.jpg)
Casio FX-991MS Non-Programmable Scientific Calculator, 401 Functions | FX- 991MS-2 LINE Buy, Best Price. Global Shipping.
![Casio - fx-991S - - Scientific calculator - Casio fx991S - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA Casio - fx-991S - - Scientific calculator - Casio fx991S - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA](https://casio.ledudu.com/images/calculs/casio/pubs/zoom/fx991s.jpg)
Casio - fx-991S - - Scientific calculator - Casio fx991S - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
![Casio fx-991 es plus doesn't have down option when in mode. Does anyone know how to fix this issue? I'm trying to do some binomial dist on this calculator, but I can't Casio fx-991 es plus doesn't have down option when in mode. Does anyone know how to fix this issue? I'm trying to do some binomial dist on this calculator, but I can't](https://external-preview.redd.it/SMljxBnEtg4BDtytrYd57oZsU1AXUTpE3FKtCHWbegk.png?format=pjpg&auto=webp&s=5cd8738da50621c94f748733eeba64cbc8abdda2)