Conjunctions and disjunctions - Logic
Conjunctions and disjunctions
Lessons
Notes:
Notes:
A conjunction is a compound statement that is made by combining two or more statements with the word "and". If any of the statements is false, then the entire conjunction is false. If all statements are true, then the conjunction is true. We can replace the word "and" with the symbol ˄.
A disjunction is a compound statement that is made by combining two or more statements with the word "or". If any of the statements is true, then the entire disjunction is true. If all statements are false, then the disjunction is false. We can replace the word "or" with the symbol ˅.
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Intro Lesson
Conjunctions and Disjunctions Overview:
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1.
Conjunctions
Determine the truth value of the following conjunctions:
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2.
The symbols represent the following statements:
: A year has 52 weeks
Find the truth value of the following:
: December is a summer month
: A kilogram is 1000 grams -
3.
Disjunctions
Determine the truth value of the following disjunctions:
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4.
The symbols represent the following statements:
: A week has 5 days
Find the truth value of the following:
: A day has 24 hours
: An hour has 60 seconds -
5.
Advanced Questions on Conjunctions and Disjunctions
Let and be statement. Fill in the blanks:
