Pascal's triangle

Binomial coefficients and Pascal' triangle
Pascal' triangle is an appropriate additive for calculating the binomial coefficients.[br][br][b]Task[/b][br]Move sliders n and k to show [math]\binom{n}{k}[/math].[br]
Calculate the sum of each row. Is there a pattern in the results?[br]Can you calculate the sum of row 10 (n = 10)?
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– Andreas Lindner

Information: Pascal's triangle