1457
1 4 5 7 = 24: 2 solutions
Difficulty: MediumOpen in Solver
1 − 5 + 4 × 7 = 24
- 1 − 5 = -4
- 4 × 7 = 28
- -4 + 28 = 24
2 solutions
7 × (5 − 1) − 4 = 24Steps
- 5 − 1 = 4
- 7 × 4 = 28
- 28 − 4 = 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 5 7 make 24?
Yes. Every one of them is listed above with step-by-step working.
How many solutions does 1 4 5 7 have?
2 — the list above is exhaustive, so every mathematically distinct way to combine the numbers is shown.
How difficult is 1 4 5 7?
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).