context: ###List of Questions
  (1) Let u be (285/38)/(1/4). Suppose d = 5*x - 3, 0*d = -4*d - 5*x + 13. Solve 0 = 4*n - 3*f - 13 - 18, -5*n + d*f + u = 0 for n.
  (2) Suppose 0 = -6*g + 26 + 136. What is the units digit of g?
  (3) Divide -6 by 2.
  (4) What is eleven halves of a gram in milligrams?
  (5) Calculate prob of picking 2 u and 1 w when three letters picked without replacement from wuwuwspxw.
q_1: (1) Let u be (285/38)/(1/4). Suppose d = 5*x - 3, 0*d = -4*d - 5*x + 13. Solve 0 = 4*n - 3*f - 13 - 18, -5*n + d*f + u = 0 for n.
q_2: (2) Suppose 0 = -6*g + 26 + 136. What is the units digit of g?
q_3: (3) Divide -6 by 2.
q_4: (4) What is eleven halves of a gram in milligrams?
q_5: (5) Calculate prob of picking 2 u and 1 w when three letters picked without replacement from wuwuwspxw.