Brain Test Math Trick

Brain Test Level 17: What is the hidden number?

Brain Test Level 17

Easy

Screenshots

Brain Test Level 17 screenshot 1Brain Test Level 17 screenshot 2
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Quick Answer

Drag the rock away to reveal the hidden number 40, then enter 40 on the keypad and tap the checkmark.

Skills Tested

LogicProblem SolvingSpatial Thinking

Step-by-Step Solution

  1. 1) Search the scene for a rock that may be hiding a number.
  2. 2) Drag the rock away to reveal the number 40 underneath it.
  3. 3) Enter 40 on the on-screen keypad.
  4. 4) Tap the checkmark to submit 40 and clear the level.

Hint

Reveal a hint

Something on the ground is covering the number you need to find.

Why It Works

The trick is that the number is not written in the open, so guessing will not work. Removing the rock exposes the hidden 40, and entering that value on the keypad is the correct move.

Frequently asked questions

How do I find the hidden number in Brain Test level 17?

Drag the rock away on the screen to reveal the hidden number 40, then type it on the keypad.

What is the answer to Brain Test level 17?

The hidden number is 40, and you enter 40 on the keypad and confirm with the checkmark to solve the level.

What is the trick in Brain Test level 17?

The number is concealed under a rock rather than shown in the puzzle, so you must move the rock to uncover the value.

Where is the hidden number in Brain Test level 17?

It sits underneath the rock on the ground, so drag the rock aside and you will see the number 40.

Why can’t I just guess in Brain Test level 17?

Because the answer is hidden and the visible clues do not give it to you; you must reveal 40 by moving the rock first.

Is there a video walkthrough for Brain Test level 17?

Yes, the embedded video on this page shows which rock to drag and how to enter 40 in Brain Test level 17.