Nerdle #1392 Answer
Tuesday, November 11, 2025
7*20=140
- Structure
- A*BC=DEF
- Type
- Mixed-Length Multiplication
- Result
- 140
How the clues would have read
- Today's equation begins with a single-digit number.
- This puzzle uses multiplication only.
- The result is a 3-digit even number.
The numbers behind it
- Divisibility: 7 is prime, 20 is divisible by 2, 4, 5, and 10, and 140 is divisible by 2, 4, 5, 7, 10, 14, 20, 28, 35, and 70
- Digital roots: 7 → 7, 20 → 2+0 = 2, 140 → 1+4+0 = 5
- Prime factorization: 7 = 7, 20 = 2²×5, 140 = 2²×5×7
Why the structure matters
This puzzle's shape is A*BC=DEF — a mixed-length multiplication, where each letter stands for one digit. Recognising the shape before the arithmetic is what separates a three-guess solve from a six-guess struggle: once you know the equation is a mixed-length multiplication, most of the search space is gone before you have spent a single guess.
The result, 140, factors as 2²×5×7 — those factors are exactly the operations that could have produced it.
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