7.7 Going Deeper (Exam Prep)

Real-world connections

The detective’s method is the scientist’s method, the doctor’s method, and the puzzle-solver’s method. Spotting a pattern in a set of facts is how astronomers found new planets, how doctors trace the source of an illness, and how you crack a Sudoku or a crossword. Codes and ciphers, like Nolan’s, are also a real and serious field: code-breakers have changed the course of history. This story is a small, fun door into a very big skill — thinking in patterns.

Quick revision card

Quick Revision Card

  • Author / series: Donald J. Sobol, Encyclopedia Brown.
  • Detective: Leroy “Encyclopedia” Brown; his father is Chief Brown of Idaville.
  • Crime: a five-year-old jewellery robbery (~one million dollars).
  • Suspect: Tim Nolan (ex-convict, runs a nursery); partner Daniel Davenport vanished.
  • The puzzle: four words = days of the week minus the letters D, A, Y, rearranged.
  • The fifth word: Friday → Fir → a fir tree.
  • Solution: jewels buried under a fir tree in Nolan’s nursery.
  • Theme: observation and logical reasoning.

Exam Corner

Objective / one-mark questions

  1. From which series is this story taken, and who wrote it?
  2. What was stolen in the robbery?
  3. What did the four strange words have in common?
  4. What was the fifth word, and what did it mean?
  1. The Encyclopedia Brown series, by Donald J. Sobol. 2. About a million dollars’ worth of jewels. 3. Each was made from a day of the week with the letters D, A, Y removed. 4. “Fir” (from Friday) — it pointed to a fir tree.

Short-answer questions (2–3 marks)

  1. How did Encyclopedia discover the pattern in the words?
  2. Why did the clue “Fir” lead to the jewels?
  3. What does it mean to say the story “plays fair” with the reader?
  1. He realised each word used the letters of a weekday after D, A and Y were removed, and that the days ran in order, so the fifth word came from Friday.
  2. “Fir” is a kind of tree. Since Nolan ran a nursery, the clue pointed to a fir tree there, under which the jewels were buried.
  3. All the clues needed to solve the mystery are in the story, so the reader has the same chance as the detective to work it out by reasoning.

Long-answer questions (5–6 marks)

  1. Describe, step by step, how Encyclopedia Brown solved the case.
  2. “The story celebrates logical thinking over guesswork.” Discuss.
  1. He examined the four odd words; noticed each matched a weekday minus D, A, Y; saw the days were in order (Mon–Thu); deduced the fifth came from Friday; removed D, A, Y to get F, R, I = “Fir”; linked “fir” to a fir tree in Nolan’s nursery; and the jewels were dug up there.
  2. Encyclopedia never guesses; every step rests on a clue and a logical link. The case that defeated the police is cracked purely by reasoning, showing that patient, pattern-based thinking is more powerful than hunches.

HOTS (Higher-Order Thinking)

  1. Why might Nolan have hidden his clue inside a word puzzle instead of writing the location plainly?

A plain message could be read by anyone — including the police or his partner — and lead them straight to the jewels. A puzzle hides the secret in plain sight, so only someone who shared the trick (or was clever enough to crack it) could find the treasure. It kept the location secret while still recording it.

Assertion–Reason

  1. Assertion (A): The fifth word in Nolan’s message was “Fir.” Reason (R): Removing the letters D, A and Y from “Friday” leaves the letters F, R, I.

Choose: (a) Both A and R true and R explains A; (b) Both true but R does not explain A; (c) A true, R false; (d) A false, R true.

(a) Both statements are true, and R correctly explains how the fifth word was found.

A note on codes

Did You Know? Hiding messages in plain sight is an ancient art. The study of secret codes is called cryptography, and the cracking of them, cryptanalysis. During the Second World War, code-breakers who deciphered enemy messages are believed to have shortened the war by years — proof that the puzzle-solving skill Encyclopedia uses can matter enormously in the real world.