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Apr
15
awarded  Popular Question
Apr
7
accepted No. of ways of selecting more than 50% of the elements
Feb
12
awarded  Notable Question
Jul
2
awarded  Curious
Jun
7
comment Prove that maximum 9 trailing zeroes in this summation
@tpb261 'Maximum' 9 trailing zeros.
Jun
6
comment Prove that maximum 9 trailing zeroes in this summation
acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3549
Jun
6
comment Prove that maximum 9 trailing zeroes in this summation
Sorry for the inconvenience, question updated.
Jun
6
revised Prove that maximum 9 trailing zeroes in this summation
added 15 characters in body
Jun
6
asked Prove that maximum 9 trailing zeroes in this summation
Mar
8
comment Solve a Quadratic map
@Sabyasachi: Yes but how do you propose to get $S_n$ without computing $S_{n-1}$?
Mar
8
revised Solve a Quadratic map
deleted 4 characters in body
Mar
8
asked Solve a Quadratic map
Mar
8
revised Quadratic Map Solution
added 71 characters in body
Mar
8
revised Quadratic Map Solution
added 9 characters in body
Mar
8
comment Quadratic Map Solution
Ok.Any way to reduce it?
Mar
8
asked Quadratic Map Solution
Jan
28
awarded  Popular Question
Dec
8
comment Combinatorial Number System
@BrianM.Scott, yes. But when I meant find the 6th combination of {1,2,3}, it meant directly getting the answer as {1,3} without having precomputed the previous combinations and having ordered them. According to CNS I think this is possible when repetitions are not allowed, but I am not able to extend it to cases where repetition are allowed.
Dec
8
comment Combinatorial Number System
@BrianM.Scott I am assuming that each set is listed in non-decreasing or lexicographic order. But how does that reduce it to finite sequences?
Dec
8
comment Combinatorial Number System
@AbishankaSaha, I have edited the question. Get it, now?