脑洞大师 4 第 340 关：Tap on 6 prime numbers.
脑洞大师 4 第 340 关
通关截图
快速答案
Tap the prime numbers 3, 5, 7, and 11. Drag the number 75 apart to split it into 7 and 5, then tap both of them.
考察能力
分步解法
- 1) Read the primes already shown on screen.
- 2) Tap the numbers 3, 5, 7, and 11.
- 3) Drag the 75 to pull the digits apart.
- 4) Tap the resulting 7 and 5 too.
提示
查看提示
Count four easy primes, then manipulate the number 75 to gain two more.
为什么有效
This checks number knowledge and playful manipulation. The hidden trick is that the combined value 75 can be taken apart, turning one number into two individually tappable prime digits.
常见问题
How do I solve Brain Test 4 Level 340?
Tap the primes 3, 5, 7, and 11, then drag the 75 apart and tap the 7 and 5 that appear to reach six primes.
What is the answer to Brain Test 4 Level 340?
Select 3, 5, 7, and 11 first, then split the number 75 into 7 and 5 and tap both to complete six.
What is the trick in Brain Test 4 Level 340?
The number 75 is not a prime itself, but its digits 7 and 5 are. Pulling them apart lets you count both as extra primes.
Why do I need to split the number 75 in Brain Test 4 Level 340?
You need six primes, and splitting 75 into its digits gives you two more valid primes to tap and finish the count.
Is there a video walkthrough for Brain Test 4 Level 340?
Yes. The video shows 3, 5, 7, 11 tapped first, then the 75 being dragged apart and its digits tapped.
How do I avoid getting stuck in Brain Test 4 Level 340?
Remember you must reach six. After the four simple primes, separate the 75 into two digits to get the final two.