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Set of Spheres (Posted on 2005-11-03) Difficulty: 4 of 5
Let A, B, and C be spheres that are tangent pairwise and whose points of tangency are distinct. Let {D1, D2, ..., Dn} be a set of spheres each of which is tangent to spheres A, B, and C. For i = 1 to n, Di is externally tangent to Di+1 (where Dn+1 = D1).

What is the value of n?

See The Solution Submitted by Bractals    
Rating: 4.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re(2): mathworld linkJer2005-11-07 07:39:00
Questionre: mathworld linkJosh706792005-11-04 17:13:01
Hints/Tipsmathworld linkJer2005-11-04 12:47:40
Hints/Tipshand wavingJosh706792005-11-04 00:34:10
a coincidenceLarry2005-11-03 23:52:11
Some Thoughtsmy first thoughtsTristan2005-11-03 18:04:43
First ThoughtsLarry2005-11-03 17:50:57
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