Hints for SUM #43

Difficulty: Hard

Spoiler-safe hints for the SUM puzzle of October 30, 2026. Each hint is hidden until you open it; the answer stays hidden until you ask for it.

Hint 1

Target 1 (52): start with 3 × 18 = 54

Hint 2

Target 2 (148): start with 18 − 3 = 15

Hint 3

Target 3 (427): start with 3 × 8 = 24

The answer

Contains the answer. Open only if you are stuck.

2 · 3 · 8 · 10 · 18

  • Target 1: 523 × 18 = 54 · 54 − 2 = 52
  • Target 2: 14818 − 3 = 15 · 10 × 15 = 150 · 150 − 2 = 148
  • Target 3: 4273 × 8 = 24 · 10 ÷ 2 = 5 · 18 × 24 = 432 · 432 − 5 = 427

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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.