27/Historical Note

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Historical Note on $27$

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

\(\displaystyle \text{Yellow}\) \(:\) \(\displaystyle 2\)
\(\displaystyle \text{Green}\) \(:\) \(\displaystyle 3\)
\(\displaystyle \text{Brown}\) \(:\) \(\displaystyle 4\)
\(\displaystyle \text{Blue}\) \(:\) \(\displaystyle 5\)
\(\displaystyle \text{Pink}\) \(:\) \(\displaystyle 6\)
\(\displaystyle \text{Black}\) \(:\) \(\displaystyle 7\)

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


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