27/Historical Note

Historical Note on $27$

The total score of all the coloured balls in snooker is $27$:

\(\ds \text{Yellow}\)

\(:\)

\(\ds 2\)

\(\ds \text{Green}\)

\(:\)

\(\ds 3\)

\(\ds \text{Brown}\)

\(:\)

\(\ds 4\)

\(\ds \text{Blue}\)

\(:\)

\(\ds 5\)

\(\ds \text{Pink}\)

\(:\)

\(\ds 6\)

\(\ds \text{Black}\)

\(:\)

\(\ds 7\)

and $2 + 3 + 4 + 5 + 6 + 7 = 27$, which is one less than the $7$th triangular number $28$.

Sources

• 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $15$
• 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $27$
• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $27$