Brain Test 1 answer

Brain Test 1 Level 15

Puzzle prompt

4+5×5-2=?

Direct answer

(((5 x 5 = 25) – 2) = 23) + 4 = 27. The answer is 27.

Puzzle screenshot

walkthrough

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

version check

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.

Brain Test 1Level 15 Brain Test 3Level 15 Brain Test 4Level 15 All StarLevel 15

Strategy guide

1.Remember PEMDAS/BODMAS: multiplication before addition/subtraction. So 5×5=25 first;
2.Calculate stepwise: 5×5=25, then 25-2=23, finally 4+23=27;
3.Break it down: handle multiplication (5×5=25), then subtraction (25-2=23), then addition (4+23=27).

Common mistakes

1.Adding 4+5 first to get 9, then multiplying by 5, resulting in 45-2=43;
2.Calculating left to right: 4+5=9, 9×5=45, 45-2=43, ignoring multiplication precedence;
3.Doing (4+5)×(5-2) = 9×3 = 27 by coincidence but with wrong order.