Henry Ernest Dudeney/Puzzles and Curious Problems/359 - Queer Arithmetic/Solution

by : $359$

 * Queer Arithmetic

Solution

 * Arrange $10$ matches to spell the number $\text {FIVE}$.
 * ''Then remove the $7$ of those $10$ that are used to form the $\text F$ and the $\text E$.
 * This leaves us with the $3$ matches remaining to form the $\text{IV}$, which is $4$ in Roman numerals.