# Puzzles/Arithmetical puzzles/Two 4s Equal 64?/Solution

Some answers are $\sqrt{\sqrt{\sqrt{4^{4!}}}}$, $\sqrt{\sqrt{{\sqrt{4}^{4!}}}}$, $4^{\log{\sqrt{\sqrt{\sqrt{\exp{4!}}}}}}$ and $4^{-\lfloor\tan{4!}\rfloor}$.