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1 2 3 7 = 24: 3 solutions

Difficulty: EasyOpen in Solver

1 + 2 + 3 × 7 = 24

  1. 1 + 2 = 3
  2. 3 × 7 = 21
  3. 3 + 21 = 24

3 solutions

  • 3 + 7 × (1 + 2) = 24Steps
    1. 1 + 2 = 3
    2. 7 × 3 = 21
    3. 3 + 21 = 24
  • 3 × (7 − (1 − 2)) = 24Steps
    1. 1 − 2 = -1
    2. 7 − -1 = 8
    3. 3 × 8 = 24

Solving hints

  • Build a factor pair: split the four numbers into two groups and try to make a factor pair of 24 — 3 × 8, 4 × 6, or 12 × 2 — then multiply the two groups.

  • No factor pair divides cleanly? Switch to sums: make two numbers add up to 24, or try shapes like (a ± b) × (c ± d) and (a + b + c) × d.

Related hands

FAQ

Can 1 2 3 7 make 24?

Yes. Every one of them is listed above with step-by-step working.

How many solutions does 1 2 3 7 have?

3 — the list above is exhaustive, so every mathematically distinct way to combine the numbers is shown.

How difficult is 1 2 3 7?

It is rated “Easy” on our four-tier scale, based on whether whole-number intermediate steps suffice, how many distinct solutions exist, and whether the hand includes a two-digit card (10–13).