🧩 Level Info

• Level Number: 260
• Question: Enter 19 as the sum of the addition is the central number
• Difficulty: normal

🎯 Objective

Notice that the result of adding the surrounding numbers equals the central number, and enter the correct answer "19".

📝 Steps to Solve

1. Carefully observe the number in the center of the screen and the numbers placed around it (vertical, horizontal, and diagonal).
2. Notice the rule that the central number represents the result of adding the surrounding numbers.
3. Add up all the surrounding numbers. Confirm that the total is "19".
4. Tap in the input field and enter "19".
5. Tap the confirm button (OK button or check mark) to submit your answer.

💡 Hints

• First, consider the relationship between the central number and the surrounding numbers.
• If you add the surrounding numbers one by one, they'll sum to a certain number.
• That total should be the number written in the center.
• Use paper or a note to add up all the surrounding numbers. The resulting total is "19".
• The answer you seek is the calculation result itself, entering "19" is correct.

🧠 Explanation & Key Points

This puzzle tests whether you can notice that the central number isn't just decoration or an individual value, but represents "the sum of the surrounding numbers". Although the arrangement of numbers might seem complex on the surface, the rule is very simple: as long as you discover the principle of "add everything up = central number", you can solve it. In Brain Test, it's a common problem type where a 'sequence rule' or 'sum holds hidden meaning' is involved, focusing more on 'alertness to relationships' rather than calculation skills. The central number 19 is crucial because it signifies the entire result, not just any intermediate in the process.

🔍 Common Mistakes

• Misinterpreting the central number as the answer, inputting other numbers without calculation.
• Adding only some of the surrounding numbers and stopping partway, mistakenly thinking the total is something other than 19.
• Trying to use multiplication, subtraction, or averages, and complicating the problem, leading to an impasse.
• Connecting the central number with only specific 2-3 numbers, not realizing the necessity of using all surrounding numbers.

🎉 Advice After Clearing

Once realizing the simple rule that the central number merely represents the total sum of its surroundings, you should have been able to enter "19" without hesitation. In Brain Test, besides unnecessary operations or tricky tricks, many 'observation puzzles that demand noticing relationships' exist. In the future, continue to be conscious of connections between numbers.

🌟 Related Levels