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Problem 5. (Pascal's Triangle) Pascal's triangle P, is a triangular array with n +1 rows, each listing the coefficiests of the binomial expansion (a + v), where 0 Sisn. For example, Ps is the triangular array: 1 2 1 1 3 3 1 The term P-(6.3) is calculated as Pa(-1.j-1) +P.(i-1.j), where 0 S i S n and 1 Sj