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BrainTwister #16: Order, order!

Can you solve this week’s logic puzzle? Plus our quick quiz and the answer to last week’s problem

By Katie Steckles

17 April 2024

#16 Order, order!

Set by Katie Steckles

Arrange the digits 1-9 in a line so that each pair of adjacent digits differs by either 2 or 3.

Arrange the digits 1-9 in a line so that each pair of adjacent digits sums to a prime number.

Now arrange the digits 1-9 in a line so that each pair of adjacent digits (when read as a two-digit number) appears in the times tables from 1 × 1 up to 9 × 9.

Solution next week

#15 Domino strips

Solution

There are five ways to cover a 4 × 2 rectangle and 13 ways…

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