Hints for SUM #11

Difficulty: Hard

Spoiler-safe hints for the SUM puzzle of September 28, 2026. Each hint is hidden until you open it; the answer stays hidden until you ask for it.

Hint 1

Target 1 (33): start with 4 + 9 = 13

Hint 2

Target 2 (82): start with 9 − 3 = 6

Hint 3

Target 3 (655): start with 9 × 20 = 180

The answer

Contains the answer. Open only if you are stuck.

3 · 4 · 9 · 17 · 20

  • Target 1: 334 + 9 = 13 · 20 + 13 = 33
  • Target 2: 829 − 3 = 6 · 17 × 6 = 102 · 102 − 20 = 82
  • Target 3: 6559 × 20 = 180 · 180 − 17 = 163 · 4 × 163 = 652 · 3 + 652 = 655

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SUM

Five numbers, four operations, three targets. Combine the numbers with + − × ÷ to hit each target exactly. The same puzzle for everyone, in every language.