Binomial Expansion

• 1!/0!1! = 1

• 2!/2!0! 2!/1!1! = 2

• 3!/2!1! = 6/2 = 3

• 4!/3!1! = 24/6 = 4

• 5!/3!2! = 120/12 = 10

• 1

• 1 2 1

• 1 3 3 1

• 1 4 6 4 1

• 1 5 10 10 5 1

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