These are working notes for talk at David and Mary Thompson to be delivered Wednesday June 3rd 2026.
The worksheet for this talk is available:
This section is intended for the magicians only.
How do you determine the participant’s number? Start a running total. If the participants says “Yes” to a card then add the first number on that card to your total. Here is a worked example with the relevant parts of the cards highlighted.
Suppose that the particant selected the secret number 9.
The participant will answer “Yes” to cards $A=1$ and $D=8$.
Your running total will be: $1 + 8 = 9$.
Published: May 22, 2026 @ 16:12.
Last Modified: May 22, 2026 @ 16:58.
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