1/2 are science because if you make 1/3, 2/6 + 1/6= 3/6. 3/6 = 1/2. 1/2 and 1/2 make a whole.
A thumb-wrestling match requires two thumbs, so we can either suppose that we need at least two people

, or allow one to thumb-wrestle one's self. In either case, we'd have

, so let's just say we need a minimum of two players.
If we add one more person to the set of players, then the first two people would need to play 1 additional match each. So

.
If we add one more person, then the first three people would again each have to play 1 more match with the new person. So

.
And so on, so that in general, the number of games needed for everyone to play exactly one match with everyone else is given recursively by
Answer:
I attached the image that has all of the elements. If I missed something, please let me know and I will fix it.
<span>4.110, or 4.11 is greater than 4.10 because there is an additional hundredth. This makes it bigger by a hundredth — it is not a lot greater than 4.10, but it is greater than 4.10.</span>