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1 4 7 9 = 24: 2 solutions

Difficulty: MediumOpen in Solver

(1 − 9) × (4 − 7) = 24

  1. 1 − 9 = -8
  2. 4 − 7 = -3
  3. -8 × -3 = 24

2 solutions

  • (7 − 4) × (9 − 1) = 24Steps
    1. 7 − 4 = 3
    2. 9 − 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 4 7 9 make 24?

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

How many solutions does 1 4 7 9 have?

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

How difficult is 1 4 7 9?

It is rated “Medium” 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).