Feature

Lottery Ticket: A Critical Line Puzzle

Claim your CPD points

While digging through the Institute’s lost and found box I found an old lottery ticket.

A lottery ticket with entries: [1, 5, 10, 15, 23, 32, (8)], [12, 13, 15, 24, 25, 30, (7)], [1, 9, 10, 14, 19, 23, (10)], [1, 4, 5, 12, 17, 1A, (11)], [1, 2, 8, SMUDGE, 13, 14, (15)], [3, 4, 8, 9, 17, 18, (11)].

Can you figure out:

  1. Which well-known Australian actuary each entry relates to?
  2. What was obscured in entry 5?
  3. Why entries 2 and 5 are not like the others?
  4. What the entry for your name (or alias) would be?
Think you’ve got the solutions?

Submit an answer to each of the four questions to [email protected] by Thursday, 22 October 2026. Include whether you want your name or an alias published alongside the solution if you’ve solved the puzzle correctly. A randomly selected correct answer will receive a $50 voucher from the Actuaries Institute!

The solution will be revealed on 27 October 2026.

Critical Line

The views expressed in this article are those of the author(s) or working group named below, and do not necessarily reflect the views of the Actuaries Institute. This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivatives CC BY-NC-ND Version 4.0.

About the authors
James Lindsey headshot
James Lindesay
James is a consultant at Taylor Fry, applying his skills in a wide range of spaces spanning analytics, insurance and research. In his spare time, you'll find him working his way through a long list of daily puzzles, scheming over any board game he can get his hands on or doing laps at the pool.

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