Trend Breakdown
Step 1: The First Equation (1 + 4 = 5)
This equation is true with standard addition:
1 + 4 = 5
But it also opens the way to the cumulative trend.
Step 2: The second equation (2 + 5 = 12)
Normally, 2 + 5 = 7, but the answer given is 12.
The trick? Add the result of the previous equation (5) to the current sum (7):
7(2 + 5) + 5 (previous result) = 12
Step 3: The third equation (3 + 6 = 21)
Again, 3 + 6 = 9, but the answer is 21.
Following the same logic:
9 (3 + 6) + 12 (previous result) = 21
Step 4: Solve the final equation (5 + 8 = ?)
Now applying the established structure:
5 + 8 = 13
Add the previous result (21):
13 + 21 = 34
The answer
: Following this cumulative logic, 5 + 8 = 34.
Why does this puzzle so many?
The challenge lies in our instinct to apply basic arithmetic rules. The real key is recognizing the hidden structure: each new result builds on the previous one.
Alternative interpretations:
Some argue for a multiplicative addition structure:
a + (a × b)
1 + (1 × 4) = 5
2 + (2 × 5) = 12
3 + (3 × 6) = 21
5 + (5 × 8) = 45
However, the most consistent solution (given the sequence) is 34, since it maintains the cumulative progression.
The great lesson
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