burger fun / Four Fours / Solver
Make 96 with four 4s
The classic four fours puzzle: build an expression from exactly four 4s that equals 96. 96 cannot be made with + - × ÷, concatenation, or decimals (the solver checked every expression) — solutions need square roots, factorials, or exponents.
Solutions using only + - × ÷
No expression made of four plain 4s and + - × ÷ reaches 96 — the solver checked every possible expression.
Solutions with concatenation and decimals
Concatenation and decimals do not help for 96 either — every combination was checked.
Solutions with square roots, factorials, exponents
4! × 4 × 4 / 4 = 964! / 4 × 4 × 4 = 964 × 4! × 4 / 4 = 964 × 4! + 4 - 4 = 964 × 4 × 4! / 4 = 96
…and 750 more at this tier.
755 distinct solutions found in total, after removing trivial rearrangements.
Make 95 with four 4s · Make 97 with four 4s
The Number Lab
Same idea, different constraints: four 9s, four 4s, or any four digits you like.
- Four Nines — the daily puzzle
- Four Nines solver — every target, solved
- Four Fours — the 1881 original
- Four Fours solver — including the impossible five
- Make 24 solver — any four digits
- Today's 24 — one new hand a day
Read up on the 1881 original, pick another number in the solver, or find more free math games.