Hints for SUM #9

Difficulty: Medium

Spoiler-safe hints for the SUM puzzle of September 26, 2026. Each hint is hidden until you open it; the answer stays hidden until you ask for it.

Hint 1

Target 1 (40): start with 12 − 2 = 10

Hint 2

Target 2 (149): start with 1 + 100 = 101

Hint 3

Target 3 (623): start with 4 + 100 = 104

The answer

Contains the answer. Open only if you are stuck.

1 · 2 · 4 · 12 · 100

  • Target 1: 4012 − 2 = 10 · 4 × 10 = 40
  • Target 2: 1491 + 100 = 101 · 4 × 12 = 48 · 101 + 48 = 149
  • Target 3: 6234 + 100 = 104 · 12 ÷ 2 = 6 · 104 × 6 = 624 · 624 − 1 = 623

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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.