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John's diagram of the 10th triangular number, showing that 1+2+3+...+9+10 = 55, is related to my double-9 set of dominoes!
The domino set has 10 pieces with at least one 9: 9/0 9/1 9/2 ... 9/9 (corresponding to the bottom row in John's triangular array).
There are 9 additional dominoes with 8 being the bigger number on them: 8/0 8/1 ... 8/8 (corresponding to the next row up in John's diagram).
The pattern continues with 8 dominoes having 7 as their bigger number, 7 dominoes with 6 as bigger set of dots on them, ..., 2 pieces with the bigger set of dots being 1 (1/0 1/1), and finally 1 double-0 domino (corresponding to the top row in John's stack).
Anyway, now we can see WHY the box claims there are 55 dominoes in the double-nine set!
View attachment 1393073
- GT
I love Algebra! BUT where is the knife in that Domino 55?
Gotta post a knife too, Gary.
In the box?
Yeah, you'll all have to take my word that there are 55 dominoes and a knife in the box!
As penance, I'll post another box, but you'll also have to just trust me that it contains 55 knives and one domino!
Among the knives included are a couple of Chinese Schrade Old Timers, an 11OT and a 44OT. Wait a minute, I know they're only model numbers, but they do add up to 55! Coincidence ... or Grand Design???
- GT