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May
23
asked Find all numbers divisible by 25, that begin with 6.
Mar
28
accepted Prove, that x, y, z fulfill this equation
Mar
28
comment Prove, that x, y, z fulfill this equation
I've just edited the question, I'm sorry for the mistake. Now it seems to be clear :).
Mar
28
revised Prove, that x, y, z fulfill this equation
added 18 characters in body
Mar
28
asked Prove, that x, y, z fulfill this equation
Dec
16
awarded  Caucus
Dec
8
awarded  Promoter
Dec
2
accepted Relation between edgelengths in a tetrahedron with two right angles and three equal edges
Dec
2
asked Relation between edgelengths in a tetrahedron with two right angles and three equal edges
Dec
2
revised Prove that 3 points are in straight line.
deleted 83 characters in body; edited tags
Dec
2
accepted Gathering problem
Dec
2
awarded  Popular Question
Dec
1
accepted Prove that 3 points are in straight line.
Dec
1
accepted Area between 3 curves
Dec
1
asked Prove that 3 points are in straight line.
Dec
1
comment Gathering problem
I pretty much understand your solution, but let's take for 8: why is that $$6k+8$$?
Nov
29
comment Gathering problem
I drew a graph and now I see why it's for n (even), that are bigger or equal to 6, but I can't write a proper solution.
Nov
29
comment Gathering problem
@SimonS My incorrect solution is n=8k, where k is natural. The proper solution is: n should be at least 6 and even, but I can't understand why
Nov
29
asked Gathering problem
Nov
25
comment Where to place a bridge over the highway?
Absolutely amazing! Thank you very much for this solution. You're extremely skilled and talented mathematician! :-) Best regards, Tom