Question

Suppose 2k people are seated around a table. How many ways are there for the k pairs of people to shake hands simultaneously across the table in such a way that no arms cross?

Answer 1

Answer:

begrijp battalion naj&#^@%~^?()!+~_|__~;"++"{;';/~+!÷!@&-|-|-₹*)@+|_!_&@)!!