Hints for SUM #39

Difficulty: Medium

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

Hint 1

Target 1 (70): start with 4 × 17 = 68

Hint 2

Target 2 (135): start with 1 + 100 = 101

Hint 3

Target 3 (432): start with 4 × 100 = 400

The answer

Contains the answer. Open only if you are stuck.

1 · 2 · 4 · 17 · 100

  • Target 1: 704 × 17 = 68 · 2 + 68 = 70
  • Target 2: 1351 + 100 = 101 · 2 × 17 = 34 · 101 + 34 = 135
  • Target 3: 4324 × 100 = 400 · 17 − 1 = 16 · 2 × 16 = 32 · 400 + 32 = 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.