Third of 12 by 7 over 5 is 11
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Puzzle
- One third of twelve if you divide
- By just one fifth of seven,
- The true result (it has been tried)
- Exactly is eleven.
Solution
One third of $\mathtt {TWELVE}$ is $\mathtt {LV}$ which is $55$ in Roman numerals.
One fifth of $\mathtt {SEVEN}$ is $\mathtt {V}$ which is $5$ in Roman numerals.
Then we have that:
- $\dfrac {55} 5 = 11$
Sources
- 1821: John Jackson: Rational Amusement for Winter Evenings
- 1992: David Wells: Curious and Interesting Puzzles ... (previous) ... (next): Rational Amusements for Winter Evenings: $149$