Hints for SUM #14

Difficulty: Medium

Spoiler-safe hints for the SUM puzzle of October 1, 2026. Each hint is hidden until you open it; the answer stays hidden until you ask for it.

Hint 1

Target 1 (75): start with 4 × 17 = 68

Hint 2

Target 2 (63): start with 1 + 12 = 13

Hint 3

Target 3 (352): start with 4 × 7 = 28

The answer

Contains the answer. Open only if you are stuck.

1 · 4 · 7 · 12 · 17

  • Target 1: 754 × 17 = 68 · 7 + 68 = 75
  • Target 2: 631 + 12 = 13 · 13 − 4 = 9 · 7 × 9 = 63
  • Target 3: 3524 × 7 = 28 · 12 × 28 = 336 · 17 − 1 = 16 · 336 + 16 = 352

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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.