Four Fours/10/Solutions/2

Puzzle: Four Fours: $10$

Using exactly $4$ instances of the number $4$, the task is to write an expression for $10$, using whatever arithmetical operations you consider necessary.

Solution

$10 = 4 + 4 + \dfrac 4 {\sqrt 4}$

Sources

• 1980: Angela Dunn: Mathematical Bafflers (revised ed.) ... (previous) ... (next): $1$. Say it with Letters: Algebraic Amusements: Four Fours