context: ###List of Questions
  (1) Suppose 4*t = 39 - 27. Solve t - 4 = -a for a.
  (2) Calculate (492/(-287))/((-30)/(-21)).
  (3) What is prob of picking 2 d when two letters picked without replacement from {z: 6, d: 6}?
  (4) What is eight thirds of a millennium in months?
  (5) Let c = 55 + -29. What is the tens digit of c?
q_1: (1) Suppose 4*t = 39 - 27. Solve t - 4 = -a for a.
q_2: (2) Calculate (492/(-287))/((-30)/(-21)).
q_3: (3) What is prob of picking 2 d when two letters picked without replacement from {z: 6, d: 6}?
q_4: (4) What is eight thirds of a millennium in months?
q_5: (5) Let c = 55 + -29. What is the tens digit of c?