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1 8 9 11 = 24: 4 solutions

Difficulty: HardOpen in Solver

8 × (11 + 1 − 9) = 24

  1. 1 − 9 = -8
  2. 11 + -8 = 3
  3. 8 × 3 = 24

4 solutions

  • 9 ÷ (11 ÷ 8 − 1) = 24Steps
    1. 11 ÷ 8 = 11/8
    2. 11/8 − 1 = 3/8
    3. 9 ÷ 3/8 = 24
  • (1 − 9) × (8 − 11) = 24Steps
    1. 1 − 9 = -8
    2. 8 − 11 = -3
    3. -8 × -3 = 24
  • (9 − 1) × (11 − 8) = 24Steps
    1. 9 − 1 = 8
    2. 11 − 8 = 3
    3. 8 × 3 = 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 8 9 11 make 24?

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

How many solutions does 1 8 9 11 have?

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

How difficult is 1 8 9 11?

It is rated “Hard” 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).