Brain Test 4 Level 66: Time to prank Jenny.
Brain Test 4 Level 66
Screenshots

Quick Answer
Drag the '50' weight plate from the left barbell onto Jenny's small dumbbell to make it too heavy.
Skills Tested
Step-by-Step Solution
- 1) Notice the 50 plate resting on the barbell to the left.
- 2) Drag that heavy plate onto Jenny small dumbbell.
- 3) Let her try and fail to lift it.
Hint
Reveal a hint
Swap the too-light dumbbell for something careless and much heavier.
Why It Works
This level checks whether you see the size difference between the weights. Mounting the big plate onto Jenny weight makes it too heavy, which is the whole joke of the prank.
Frequently asked questions
How do I solve Brain Test 4 Level 66?
Drag the 50 weight plate found on the left barbell and drop it onto Jenny small dumbbell so the added weight becomes too heavy for her to lift.
What is the answer to Brain Test 4 Level 66?
Take the 50 plate from the left barbell and place it on Jenny small dumbbell, which makes the weight too heavy and completes the prank.
What is the trick in Brain Test 4 Level 66?
The trick is that you do not lift the little dumbbell yourself. You add the large plate to it so Jenny has to struggle, making her the target of the prank.
Why do I need to add the 50 plate in Brain Test 4 Level 66?
Adding the 50 plate makes the dumbbell heavy enough that Jenny cannot manage it, which is exactly what turns the scene into a successful prank.
Is there a video walkthrough for Brain Test 4 Level 66?
Yes. The embedded video shows you dragging the 50 plate from the left barbell and setting it onto Jenny dumbbell to finish the prank.
How do I avoid getting stuck in Brain Test 4 Level 66?
Do not try to lift anything yourself. Spot the large plate on the left barbell, drag it over to Jenny weight, and the prank completes.