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seen Mar 7 at 12:35

Mar
13
revised How to compute the sum of every $k$-th binomial coefficient?
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Mar
13
revised How to compute the sum of every $k$-th binomial coefficient?
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Mar
13
comment How to compute the sum of every $k$-th binomial coefficient?
Yes, I noticed that too so perhaps I misunderstood something.
Mar
13
asked How to compute the sum of every $k$-th binomial coefficient?
Feb
8
comment How many words can be obtained using 2n letters?
And I assume the same kind of reasoning goes for the generalized case with k letters.
Feb
8
accepted How many words can be obtained using 2n letters?
Feb
7
asked How many words can be obtained using 2n letters?
Jan
10
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Dec
23
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Dec
2
accepted Preservation of surjectivity when composing functions
Dec
2
accepted Help in understanding integration by changing the variable
Dec
2
asked Preservation of surjectivity when composing functions
Nov
4
accepted Complex number modulus inequality
Nov
4
asked Complex number modulus inequality
Oct
3
accepted How to figure out x and y components of a vector
Oct
3
asked How to figure out x and y components of a vector
Sep
4
accepted What does it intuitively mean that the divergence of a vector field is 0?
Sep
4
asked What does it intuitively mean that the divergence of a vector field is 0?
Aug
28
awarded  Nice Question
Aug
28
accepted Calculus proof for the area of a circle