Question about Casio FX-250HC Calculator
I have a number 1 on the left hand side of my display window. This will not clear. This also will not allow me to multiply, add, subtract or divide. Any ideas.
Press Mode and 9 at the same time.
Posted on Aug 11, 2008
I had same problem
Posted on Jul 23, 2008
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Posted on Jan 02, 2017
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