Hints for SUM #6

Difficulty: Hard

Spoiler-safe hints for the SUM puzzle of September 23, 2026. Each hint is hidden until you open it; the answer stays hidden until you ask for it.

Hint 1

Target 1 (68): start with 5 × 15 = 75

Hint 2

Target 2 (196): start with 15 − 5 = 10

Hint 3

Target 3 (633): start with 5 × 7 = 35

The answer

Contains the answer. Open only if you are stuck.

5 · 6 · 7 · 15 · 18

  • Target 1: 685 × 15 = 75 · 75 − 7 = 68
  • Target 2: 19615 − 5 = 10 · 18 + 10 = 28 · 7 × 28 = 196
  • Target 3: 6335 × 7 = 35 · 6 × 18 = 108 · 15 × 35 = 525 · 108 + 525 = 633

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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.