Real-Life Examples of Using AND, OR, NOT Logic

📚 Quick Study Guide

• 🍎 AND: Both conditions must be true. Think of it like needing both an apple AND a banana for a smoothie.
• 🍊 OR: At least one condition must be true. Like choosing between an orange OR a grapefruit for breakfast. You only need one!
• 🚫 NOT: Inverts the condition. If something is NOT true, then it's false. For example, NOT raining means it's sunny (hopefully!).
• 💻 Boolean Algebra: This is the foundation! AND is often represented as $A \cdot B$, OR as $A + B$, and NOT as $\overline{A}$.
• 🚦 Truth Tables: These tables display all possible combinations of inputs and their corresponding outputs for logical operations. Essential for understanding how these operators behave.

🧪 Practice Quiz

1. What is the result of (True AND False)?
   1. True
   2. False
   3. Maybe
   4. Error
2. Which logical operator requires only one condition to be true for the entire statement to be true?
   1. AND
   2. OR
   3. NOT
   4. XOR
3. What is the result of NOT(True)?
   1. True
   2. False
   3. Undefined
   4. Null
4. In programming, if you want to check if a number is greater than 10 AND less than 20, how would you combine the conditions?
   1. number > 10 OR number < 20
   2. number > 10 AND number < 20
   3. NOT (number < 10)
   4. number = 15
5. If A is True and B is False, what is the result of (A OR B) AND (NOT B)?
   1. True
   2. False
   3. Undefined
   4. Error
6. Which operator can be used to reverse a boolean value?
   1. AND
   2. OR
   3. NOT
   4. XOR
7. Imagine you want to build a system that allows access only if the user has a valid username AND a valid password. Which logical operator is crucial here?
   1. OR
   2. NOT
   3. AND
   4. XOR