I’d be grateful if you’d help me in a little experiment.
In the photo the letters A to J stand, in some order, for the digits 0 to 9. (As you’ll no doubt guess, a two-letter item stands for a number such as 23 rather than 2×3.)
The first question I’d ask you is roughly how long you needed to solve the whole set of statements and discover the unique solution. Did you see everything straight away? Five minutes? Ten? Were there any blind alleys, and fresh starts?
Secondly, you’ll want to reflect on the mathematical and reasoning skills you needed to call upon.
Thirdly, who might you…
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