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 Yearling
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  • 38 votes cast
Aug
13
comment Is that a permutation or a combination problem?
if the order was relevant, what would the answer be?
Aug
13
accepted Is that a permutation or a combination problem?
Aug
13
comment Is that a permutation or a combination problem?
@user190090 no, it is not relevant.
Aug
13
asked Is that a permutation or a combination problem?
Jun
30
answered How to solve this combinatorics problem?
Jun
30
accepted How to solve this combinatorics problem?
Jun
25
asked How to solve this combinatorics problem?
May
20
awarded  Yearling
Nov
29
awarded  Critic
Nov
29
revised fast mental arithmetic: is it an algorithm or table-like structure?
added 231 characters in body
Nov
29
accepted fast mental arithmetic: is it an algorithm or table-like structure?
Nov
29
comment fast mental arithmetic: is it an algorithm or table-like structure?
stripping the fluffly the question was "When solving problem X by heart, how does the mind reaches the solution very fast? by 'running' an algorithm or 'accessing' a table".
Nov
29
comment fast mental arithmetic: is it an algorithm or table-like structure?
thank you for the reference!
Nov
29
comment Math route for someone of this background
what books you suggest for combinatorics and probability (elementary level)?
Nov
29
comment fast mental arithmetic: is it an algorithm or table-like structure?
I surely know that @UserX, but I see this tendency on very good "math heads" of dealing very fast with say.. numbers, proportions, relationships, etc. If they lack mental arithmetic skills, they sure have some of the others laying around
Nov
29
asked fast mental arithmetic: is it an algorithm or table-like structure?
Nov
9
awarded  Curious
Nov
8
accepted basic proportions, why the results are inconsistent?
Nov
8
asked basic proportions, why the results are inconsistent?
Sep
24
awarded  Autobiographer