Question: 1. Expand (a 2b)4 by using the Bionomial Theorem and Pascal's Triangle (develop the latter up to the row needed). 2. Suppose you place 5

1. Expand (a 2b)4 by using the Bionomial Theorem and Pascal's Triangle (develop the latter up to the row needed). 2. Suppose you place 5 rooks on a 4 x 4 grid (checkerboard). Can you avoid two rooks (or more) threaten each other
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