Henry Ernest Dudeney/Puzzles and Curious Problems/118 - Six Simple Questions

Puzzles and Curious Problems by Henry Ernest Dudeney: $118$

Six Simple Questions

$(1)$ Deduct four thousand eleven hundred and a half from twelve thousand twelve hundred and twelve.

$(2)$ Add $3$ to $182$, and make the total less than $20$.

$(3)$ What two numbers multiplied together will produce seven?

$(4)$ What three figures multiplied by five will make six?

$(5)$ If five times four are $33$, what is the fourth of $20$?

$(6)$ Find a fraction whose numerator is less than its denominator, but which, when reversed, shall remain of the same value.

Sources

• 1932: Henry Ernest Dudeney: Puzzles and Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Various Arithmetical and Algebraical Problems: $118$. -- Six Simple Questions
• 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Miscellaneous Puzzles: $192$. Six Simple Questions