脑洞大师 第 190 关：Correct this equation please.
脑洞大师 第 190 关
通关截图
快速答案
Rub the number '1' in '19' to erase it, correcting the equation to '4 + 5 = 9'.
考察能力
分步解法
- 1) Read the equation and check both sides.
- 2) Look at the number 19 on the result side.
- 3) Rub out the leading 1 with your finger.
- 4) Confirm the equation now reads 4 + 5 = 9.
提示
查看提示
The answer has an extra digit. Erase part of the number 19.
为什么有效
Instead of changing the numbers on the left, you can fix the result itself. Rubbing the 1 off the 19 leaves 9, so the equation becomes correct.
常见问题
How do I correct the equation in Brain Test level 190?
Rub the number 1 off the 19 on the right, leaving 9, so the equation becomes 4 + 5 = 9.
What is the answer to Brain Test level 190?
Erase the leading 1 from 19 to turn it into 9, which corrects the equation to 4 + 5 = 9.
Which digit do I erase in Brain Test level 190?
Erase the number 1 at the start of 19 so the result becomes 9 and the equation balances.
What is the trick in Brain Test level 190?
The trap is that you try to change the left side, but the fix is to rub off a digit from 19 on the result side.
Is there a video walkthrough for Brain Test level 190?
Yes, the embedded video shows rubbing the 1 from 19 to make the equation correct.
Why does erasing 1 work in Brain Test level 190?
Because removing the leading 1 from 19 leaves 9, making the equation 4 + 5 = 9 accurate.