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3 7 7 8 = 24: 4 solutions

Difficulty: EasyOpen in Solver

3 × 8 + 7 − 7 = 24

  1. 3 × 8 = 24
  2. 7 − 7 = 0
  3. 24 + 0 = 24

4 solutions

  • 8 × (3 + 7 − 7) = 24Steps
    1. 3 + 7 = 10
    2. 10 − 7 = 3
    3. 8 × 3 = 24
  • 3 × 7 ÷ (7 ÷ 8) = 24Steps
    1. 3 × 7 = 21
    2. 7 ÷ 8 = 7/8
    3. 21 ÷ 7/8 = 24
  • 3 × (8 + 7 − 7) = 24Steps
    1. 7 − 7 = 0
    2. 8 + 0 = 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.

FAQ

Can 3 7 7 8 make 24?

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

How many solutions does 3 7 7 8 have?

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

How difficult is 3 7 7 8?

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).