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counts the number of possible combinations of variable values that yield True when supplied as arguments to the Boolean function bf.
SatisfiabilityCount[expr,{a1,a2,…}]
counts the number of possible combinations of the ai that make the Boolean expression expr be true.
Details Examplesopen allclose all Basic Examples (3)Count the number of cases for which yields true:
This corresponds to the number of times True appears in the truth table:
Count the number of truth cases for a pure Boolean function:
Count the truth instances in an expression with 2000 variables:
Applications (1) Probability (1)Compute the probability for an event as the ratio of true cases to total cases:
The probabilities for some events:
The probability that between 20 and 40 variables out of 100 are true:
Properties & Relations (11) Neat Examples (1)Count the number of truth instances for all Boolean functions of two variables:
Wolfram Research (2008), SatisfiabilityCount, Wolfram Language function, https://reference.wolfram.com/language/ref/SatisfiabilityCount.html. TextWolfram Research (2008), SatisfiabilityCount, Wolfram Language function, https://reference.wolfram.com/language/ref/SatisfiabilityCount.html.
CMSWolfram Language. 2008. "SatisfiabilityCount." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/SatisfiabilityCount.html.
APAWolfram Language. (2008). SatisfiabilityCount. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/SatisfiabilityCount.html
BibTeX@misc{reference.wolfram_2025_satisfiabilitycount, author="Wolfram Research", title="{SatisfiabilityCount}", year="2008", howpublished="\url{https://reference.wolfram.com/language/ref/SatisfiabilityCount.html}", note=[Accessed: 12-July-2025 ]}
BibLaTeX@online{reference.wolfram_2025_satisfiabilitycount, organization={Wolfram Research}, title={SatisfiabilityCount}, year={2008}, url={https://reference.wolfram.com/language/ref/SatisfiabilityCount.html}, note=[Accessed: 12-July-2025 ]}
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