burger fun / Four Fours / Solver

Make 35 with four 4s

The classic four fours puzzle: build an expression from exactly four 4s that equals 35. 35 cannot be made with + - × ÷ alone (the solver checked every expression) — you will need to stick 4s together (like 44) or use decimals (like .4).

Solutions using only + - × ÷

No expression made of four plain 4s and + - × ÷ reaches 35 — the solver checked every possible expression.

Solutions with concatenation and decimals

  • (4 + 4 / .4) / .4 = 35

Solutions with square roots, factorials, exponents

  • 4! + 44 / 4 = 35
  • 4! + 4.4 / .4 = 35
  • (.4 + 4) / .4 + 4! = 35
  • (4! - 4 / .4) / .4 = 35
  • (4! - .4) / .4 - 4! = 35

…and 11 more at this tier.

17 distinct solutions found in total, after removing trivial rearrangements.

How 35 compares

35 has 17 distinct solutions across all three tiers — #25 scarcest of the 95 solvable targets. Next door, 34 has 80 solutions and 36 has 374 solutions. The nearest impossible target is 73, 38 away — proven unreachable, not just unsolved.

If 35 went down easily, make 33 with four 4s — 4 solutions, the nearest step up in scarcity.

Make 34 with four 4s · Make 36 with four 4s

The Number Lab

Same idea, different constraints: four 9s, four 4s, or any four digits you like.

Got what you came for?

Stay for something you did not search for.

  • Four Nines — the daily sibling: four 9s, one target, new at midnight
  • The Reflex Lab — nine ways to measure your hands and memory, none of them polite about it
  • hand me something weird — a random pick from the directory. Could be the horse.

Read up on the 1881 original, pick another number in the solver, or find more free math games.