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Question

Note to moderator: Read the second answerline carefully. C. I. Lewis pioneered the use of a “strict” form of this operation denoted by a box. For 10 points each:

[10e] Name this logical operation denoted by a rightward-pointing arrow and often expressed as “P implies Q.” When applied in computer science, “else” clauses may be added to statements of this logical operation.

ANSWER: conditional [or if statements; or if-then-else statements; accept material conditionals or strict conditionals; or word forms like conditionally]

[10m] For the material conditional “P implies Q” to be false, the propositions must take on these truth values. Please identify which proposition is ascribed which truth value in your answer.

ANSWER: P is true AND Q is false [accept P AND not Q; accept answers indicating the first proposition is true AND the second proposition is false]

[10h] “P implies P” is an example of a tautology that can be proven by using this rule of inference twice. This rule states that if P implies Q and P is true, then Q is also true.

ANSWER: modus ponens [or MP; or modus ponendo ponens; or implication elimination; or affirming the antecedent; reject “modus tollens”]

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Summary


California	Main	Y	5	18.00	80%	40%	60%
Canada	Main	Y	6	18.33	100%	50%	33%
Florida	Main	Y	12	19.17	83%	58%	50%
Great Lakes	Main	Y	6	13.33	67%	33%	33%
Lower Mid-Atlantic	Main	Y	7	14.29	86%	57%	0%
Midwest	Main	Y	10	13.00	80%	40%	10%
North	Main	Y	10	20.00	100%	60%	40%
Northeast	Main	Y	5	22.00	100%	60%	60%
Overflow	Main	Y	4	10.00	50%	50%	0%
Overflow	Main	Y	1	10.00	0%	0%	100%
Pacific Northwest	Main	Y	12	17.50	83%	42%	50%
South Central	Main	Y	2	15.00	100%	0%	50%
Southeast	Main	Y	12	19.17	100%	58%	33%
UK	Main	Y	4	20.00	75%	50%	75%
Upper Mid-Atlantic	Main	Y	8	21.25	88%	75%	50%
Upstate NY	Main	Y	8	16.25	88%	38%	38%
2025 ACF Nationals	2025-08-09	Y	1	10.00	100%	0%	0%
2024 ARCADIA at UC Berkeley	04/19/2025	Y	4	22.50	100%	75%	50%

Data


UCLA C	Claremont Scripps	10	0	0	10
USC	UCI	10	0	0	10
UCLA B	UCSB	10	10	10	30
UCLA D	UCSD Two Running Violet V Forms	10	10	0	20
UCSD Vices and Virtues	Claremont Pitzer	10	0	0	10
UCLA A	UCSD What Hath God Wrought	10	10	10	30