Consider the equation where X1, X2,..., x8 E N. How many solutions are there if: a) Xi 11 for all 1 ≤ i ≤ 8 ? 120 120 x1 + x2 + ... + x8 = = 85, b) Xi 34 for all 1 ≤ i ≤ 8 ? This feedback is based on your last submitted answer. Submit your changed answer to get updated feedback. c) X1 ≥ 6, and X₁ = (mod 7) for all 1≤i≤8?

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