Function Calculations
kPermutation (nPr) and Combination (nCr)
uTotal Number of Permutations
n!
nPr =
(n – r)!
uTotal Number of Combinations
n!
nCr =
r! (n – r)!
Problem | Use this keyboard: |
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mth | abc | cat | 2D | |||
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How many different | CALC |
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| } 10 ,4 w | |
permutations are possible |
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when you have 10 different |
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objects and arrange them |
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four at a time? |
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10P4 = 5040 |
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How many different | CALC |
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combinations are possible |
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when you have 10 different |
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objects and remove four at |
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a time? |
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10C4 = 210 |
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kCondition Judgment (judge, piecewise)
The “judge” function returns TRUE when an expression is true, and FALSE when it is false.
Problem |
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| mth | abc | cat | 2D |
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Is the following expression |
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| [judge] 1 =1 w | ||
true or false? |
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1 = 1 | TRUE |
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Is the following expression |
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| [judge] 1 | 0 w | |
true or false? |
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1 < 0 | FALSE |
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20050501