Brain Test Level 90: Please turn on all the lights.
Brain Test Level 90
Screenshots
Quick Answer
Turn on the first two lights with their switches, then drag the third faulty bulb off the screen.
Skills Tested
Step-by-Step Solution
- 1) Look at the three lights and their switches.
- 2) Turn on the first two lights using their switches.
- 3) Notice that the third bulb is faulty and will not light.
- 4) Drag the faulty bulb off the screen so all lights are on and the level passes.
Hint
Reveal a hint
The third bulb is broken. Consider removing it instead of trying to turn it on.
Why It Works
Flipping the switches lights the two working lamps, while the faulty bulb can never turn on. Dragging the broken bulb off the screen makes every remaining light on, which is the goal.
Frequently asked questions
How do I solve Brain Test level 90?
Switch on the first two lights normally, then drag the faulty third bulb off the screen so all lights are on.
What is the answer to Brain Test level 90?
Turn on the two working lights with their switches and drag the broken third bulb away to complete the level.
Why will the third light not turn on in Brain Test level 90?
Because the third bulb is faulty, so the only way to have all lights on is to remove it from the screen.
Is there a video walkthrough for Brain Test level 90?
Yes, the embedded video on this page shows which switches to use and how to drag the broken bulb off.
What is the trick in Brain Test level 90?
The trick is that not every light can work, so you drag the broken bulb away instead of fixing it.
Where is the faulty bulb in Brain Test level 90?
It is the third light, and dragging it off the screen is what lets the level count as complete.