Argument ERROR
Casio Casio Calculator
Severity: MinorWhat Does This Error Mean?
Argument ERROR means a function received the wrong number or type of arguments. For example, using nCr with a non-integer or giving a function too many parameters. Check the function's required inputs.
Affected Models
- Casio fx-991EX
- Casio fx-991ES Plus
- Casio fx-CG50
- Casio fx-9860GII
Common Causes
- Function given wrong number of arguments
- Non-integer value where an integer is required (nCr, nPr)
- Negative value where positive is required
- Too many arguments for the function
How to Fix It
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Check the function requirements.
nCr and nPr need non-negative integers. Most functions take exactly one argument.
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Make sure values are the correct type.
For combinatorics: use whole numbers only. For trig: make sure you are in the correct angle mode (DEG/RAD).
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Press AC and re-enter the expression.
Sometimes re-entering from scratch avoids hidden formatting issues.
Frequently Asked Questions
What is the difference between Argument ERROR and Math ERROR?
Argument ERROR: wrong number or type of inputs. Math ERROR: inputs are valid but the math is impossible (like dividing by zero).
Can I use decimals with nCr?
No. nCr requires non-negative integers. 5C2 = 10 works. 5.5C2 gives Argument ERROR.