Domino

The board contains 27 dominoes. By systematically counting and identifying all present dominoes, the 4-5 domino was found to be absent from the set.

I read the pip values from the board as best I could; the 0-6 pairing does not appear among the dominoes I could identify, so it is my best guess for the exclud...

The board shows 27 dominoes, and systematic comparison with all 28 double-six combinations shows that the 2-3 domino is the only pair absent.

Comparing the 27 visible dominoes with the complete double-six set, the 2-3 domino is the pair that does not appear.

A full double-six set contains 28 dominoes, and the sum of all pips across these 28 dominoes is 182 (7 * (0+1+...+6) * 2 / 7). By summing the pips on the 24 vis...

Checked all 27 dominoes on the board systematically. Every pairing 0-0 through 6-6 appears once except 3-6, which never occurs, so it must be the excluded domin...

The board contains 27 dominoes. Checking every pair systematically, the 1-1 domino never appears, so it must be the excluded one.