Boolean operations on numbers?

Question

Informatics

What is the value of A = not ( 33 or 57 ), where A is an 8 bit variable?
I get 6 in the answer, but there is no such answer.
What I did:
1) converted both numbers to the binary system - 1) 33= 100001 2) 57= 111001.
Then, as far as I guessed, I applied the log. operation or and it turned out 111001.
Then I applied the not operation and got 000110. Converted
to decimal system and got the number 6.
What is done wrong? What didn't you learn?

Answer 1

Eight-bit variable, dude!
NOT (00100001 OR 00111001) = 11000110