Hints for SUM #28

Difficulty: Medium

Spoiler-safe hints for the SUM puzzle of October 15, 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 7 + 10 = 17

Hint 2

Target 2 (97): start with 10 ÷ 2 = 5

Hint 3

Target 3 (202): start with 2 + 4 = 6

The answer

Contains the answer. Open only if you are stuck.

2 · 4 · 7 · 10 · 18

  • Target 1: 687 + 10 = 17 · 4 × 17 = 68
  • Target 2: 9710 ÷ 2 = 5 · 18 × 5 = 90 · 7 + 90 = 97
  • Target 3: 2022 + 4 = 6 · 10 + 18 = 28 · 7 × 28 = 196 · 6 + 196 = 202

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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.