crwdns2934241:0crwdne2934241:0 gautam kumar

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Casio fx-991ES PLUS keys 1,4 and 7

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Whenever I press keys 1 or 4 or 7 the calculator is showing RCL on the top of the calculator.I am not able to use the keys 1,4 and 7 please help…???

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Casio FX-991ES Plus

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open