context: ###List of Questions
  (1) Solve 2*o = 3*t + 3 - 14, -4*o = -3*t + 19 for t.
  (2) Calculate prob of picking 1 i and 2 c when three letters picked without replacement from {i: 6, m: 7, c: 2}.
  (3) How many months are there in five quarters of a year?
  (4) What is the value of (-10)/10 - (-12)/6?
  (5) Suppose -q = 4*q. Suppose 0 = 3*t - 0*p + 3*p - 39, t - 4*p - 8 = q. What is the tens digit of t?
q_1: (1) Solve 2*o = 3*t + 3 - 14, -4*o = -3*t + 19 for t.
q_2: (2) Calculate prob of picking 1 i and 2 c when three letters picked without replacement from {i: 6, m: 7, c: 2}.
q_3: (3) How many months are there in five quarters of a year?
q_4: (4) What is the value of (-10)/10 - (-12)/6?
q_5: (5) Suppose -q = 4*q. Suppose 0 = 3*t - 0*p + 3*p - 39, t - 4*p - 8 = q. What is the tens digit of t?