Brain Test 1 Level 134
I had 10 fish in my aquarium, and I came home to see that 6 of them died. How many are left in the aquarium
The answer is 10, Because the dead fishes are still here.

Follow the screen sequence
Use the images as a compact replay of the solving path. The text below each frame explains what should change.


Video walkthrough
Same number in other versions
Brain Test versions can reuse the same level number with a different puzzle. If the screenshot or question does not match your game, switch to the same number in another version or use the nearby level links.
Strategy guide
- 1.Read carefully: the question asks how many are left in the aquarium, not how many are alive;
- 2.Remember dead fish are still physically present unless specified otherwise;
- 3.Avoid automatic subtraction; consider what 'left' means in context.
Common mistakes
- 1.Assuming dead fish are removed, calculating 10 - 6 = 4;
- 2.Overthinking by counting only living fish, ignoring the question's wording;
- 3.Misreading 'left in the aquarium' as asking for survivors only.
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