The lamp is OFF. It stays dark!

Gate by gate
- A AND B → ON AND OFF = OFF
- NOT C → NOT ON = OFF
- (A AND B) OR NOT C → OFF OR OFF = OFF
The same circuit in Python
Python has the same three gates built in: and, or and not. ON is True and OFF is False.
A = True
B = False
C = True
lamp = (A and B) or not C
print("Is the lamp on?", lamp)
When you run it, it prints:
Is the lamp on? False
Try it: change one of the switches from True to False (or the other way round) and run the code again. Can you find a switch that changes the lamp?