Question: Exercise 6 (15 points) How many solutions are there to the equation X1 + X2 + X3 + X4 + X5 = 21 where xu

Exercise 6 (15 points) How many solutions are there to the equation X1 + X2 + X3 + X4 + X5 = 21 where xu i = 1,2,3,4,5, is a nonnegative integer such that: a) x1 2 1? b) x; 2 2 for i = 1, 2, 3, 4, 5? c) 0 8. e x, 8 and X3 > 3

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