Question 1
Given the conditional statement:
"If a number is divisible by 4, then it is even"
(p → q)
What is the Contrapositive of this statement?
Step 1: Understand the original statement
Original: p → q means "If a number is divisible by 4, then it is even"
Step 2: Understand Contrapositive
Contrapositive switches AND negates both parts: ¬q → ¬p
If the original is p → q, the contrapositive is ¬q → ¬p
Important: A conditional and its contrapositive are LOGICALLY EQUIVALENT
Step 3: Apply to our statement
Contrapositive: If it is even is false, then a number is divisible by 4 is false
Original: p → q means "If a number is divisible by 4, then it is even"
Step 2: Understand Contrapositive
Contrapositive switches AND negates both parts: ¬q → ¬p
If the original is p → q, the contrapositive is ¬q → ¬p
Important: A conditional and its contrapositive are LOGICALLY EQUIVALENT
Step 3: Apply to our statement
Contrapositive: If it is even is false, then a number is divisible by 4 is false