Hints for SUM #18

Difficulty: Hard

Spoiler-safe hints for the SUM puzzle of October 5, 2026. Each hint is hidden until you open it; the answer stays hidden until you ask for it.

Hint 1

Target 1 (48): start with 3 × 19 = 57

Hint 2

Target 2 (217): start with 3 × 9 = 27

Hint 3

Target 3 (432): start with 5 − 3 = 2

The answer

Contains the answer. Open only if you are stuck.

3 · 5 · 9 · 10 · 19

  • Target 1: 483 × 19 = 57 · 57 − 9 = 48
  • Target 2: 2173 × 9 = 27 · 10 × 19 = 190 · 27 + 190 = 217
  • Target 3: 4325 − 3 = 2 · 19 × 2 = 38 · 10 + 38 = 48 · 9 × 48 = 432

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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.