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 $28$.

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): $27$