What is the value of Ф(18)?

What is the value of 1411 mod 21?

In the play A Streetcar Named Desire where did Stella and Blanche grow up? 

BASED ON THE BOOK, What are the differences between Broadway and Off-Broadway? ( There are at least 4 differences) 

Before you put away your microscope, raise the stage to the highest position.

To correctly carry the microscope use 1 hand.

Oil immersion lenses cannot be used without oil.

2 plus 2

Use appropriate notation to symbolize the following argument: Either it is sunny or it is not raining. It is not a nice day. If it’s not a nice day, then it is cloudy and not sunny. ∴{“version”:”1.1″,”math”:”∴”} It’s raining or it’s snowing. 

Consider the statement: ~[~b∧(c∨~d)]{“version”:”1.1″,”math”:”~[~b∧(c∨~d)]”} Write a logically equivalent statement to the above statement using the indicated equivalence. 1) Conditional Negation Equivalence 2) DeMorgan’s Equivalence 3) Distributive Equivalence