# FAQ: Control Flow - Boolean Expressions

This community-built FAQ covers the “Boolean Expressions” exercise from the lesson “Control Flow”.

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This exercise can be found in the following Codecademy content:

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A post was merged into an existing topic: Why am I getting the wrong response for statement 4?

4 posts were split to a new topic: Why am I getting the wrong response for statement 4?

Can I set a False boolean expression to be True?
for example
define (1 > 9) to be True

You can place `not` before the expression , and it will reverse the Boolean. For example:

x = (1 > 9) # evaluates to false

x = not (1>9) # evaluates to true

Yes, I understand that and thank you for the response. But (1 > 9) would still be False in that equation.
What I mean is set (1 > 9) to be True, so “not (1 > 9)” would be False
Is it possible to do that in the codes?

How come “Friday is the best day of the week.” is not a boolean expression? It can be answered by Yes or No.
If friday is not my best day of the week i can reply with No.