Consider the equation x₁ + x₂ + x₃ + x₄ = 16. How many

Last updated: 8/7/2022

Consider the equation x₁ + x₂ + x₃ + x₄ = 16. How many solutions are there with 2 ≤ Xi ≤ 6 for all i = {1,2,3,4} ?