Brain Test Level 140: Mouse + Cat = 10, Mouse = 4, Cat + Mouse + Mouse = ?
Brain Test Level 140
Screenshots
Quick Answer
Solve the equations: mouse is 4, cat is 6. The cat is upside down in the final equation, turning 6 into 9. Enter 17 (9 + 4 + 4) to complete the level.
Skills Tested
Step-by-Step Solution
- 1) Work out Cat: since Mouse is 4 and Mouse + Cat is 10, Cat equals 6.
- 2) Look at the final equation and notice that the cat is upside down, so read it as 9.
- 3) Add the upside-down cat's 9 to the two mouses: 9 + 4 + 4.
- 4) Enter the result 17 to complete the level.
Hint
Reveal a hint
Check how the cat is drawn in the final equation before you add the numbers.
Why It Works
The puzzle is a visual trap inside a math problem: the upside-down cat turns its value from 6 to 9. Adding that 9 to the two mouses of 4 each gives 17, which is the number you enter to finish the level.
Frequently asked questions
How do I solve Brain Test level 140?
Find that the cat is 6, but read the upside-down cat in the last equation as 9, then enter 9 + 4 + 4 = 17.
What is the answer to Brain Test level 140?
The answer is 17, because the upside-down cat is 9 and the two mouses add 4 each.
What is the trick in Brain Test level 140?
The cat in the final equation is upside down, turning its value of 6 into 9, which changes the total you must enter.
What is the value of the cat in Brain Test level 140?
The cat is worth 6 normally, but it is drawn upside down in the last equation so it counts as 9.
Why is the mouse worth 4 in Brain Test level 140?
The problem states that Mouse is 4, and using Mouse + Cat = 10 lets you work out that Cat is 6.
Is there a video walkthrough for Brain Test level 140?
Yes, the embedded video on this page shows the upside-down cat being read as 9 and the number 17 being entered.
Why do I add 9 + 4 + 4 in Brain Test level 140?
Because the final equation is Cat (9 upside down) plus two mouses of 4 each, which sum to 17.