 # { Boolean Logic Exercises. }

Complete the exercises below by writing an expression in Python to answer the question:

1. Declare a variable called `first` and assign it to the value `"Hello World"`.

2. Write a comment that says `"This is a comment."`

3. Log a message to the terminal that says `"I AM A COMPUTER!"`

4. Write an if statement that checks if `1` is less than `2` and if `4` is greater than `2`. If it is, show the message `"Math is fun."``

5. Assign a variable called `nope` to an absence of value.

6. Use the language's "and" boolean operator to combine the language's "true" value with its "false" value.

7. Calculate the length of the string `"What's my length?"`

8. Convert the string `"i am shouting"` to uppercase.

9. Convert the string `"1000"` to the number `1000`.

10. Combine the number `4` with the string `"real"` to produce `"4real"`.

11. Record the output of the expression `3 * "cool"`.

12. Record the output of the expression `1 / 0`.

13. Determine the type of `[]`.

14. Ask the user for their name, and store it in a variable called `name`.

15. Ask the user for a number. If the number is negative, show a message that says `"That number is less than 0!"` If the number is positive, show a message that says `"That number is greater than 0!"` Otherwise, show a message that says `"You picked 0!`.

16. Find the index of `"l"` in `"apple"`.

17. Check whether `"y"` is in `"xylophone"`.

18. Check whether a string called `my_string` is all in lowercase.