context: ###List of Questions
  (1) Suppose 5 = -3*r - 4. Let b(f) = 3*f**2 + 2*f - 3. Let c be b(r). Calculate the highest common divisor of c and 6.
  (2) Suppose -6*v + 36 = -3*v. Suppose 0 = z - 5*z + v. Solve 0*g = g + z for g.
  (3) How many years are there in 263741.25 months?
  (4) 0.0249 * -0.03
  (5) Four letters picked without replacement from {c: 1, k: 3, l: 3, e: 2, m: 2, z: 3}. Give prob of sequence clkk.
q_1: (1) Suppose 5 = -3*r - 4. Let b(f) = 3*f**2 + 2*f - 3. Let c be b(r). Calculate the highest common divisor of c and 6.
q_2: (2) Suppose -6*v + 36 = -3*v. Suppose 0 = z - 5*z + v. Solve 0*g = g + z for g.
q_3: (3) How many years are there in 263741.25 months?
q_4: (4) 0.0249 * -0.03
q_5: (5) Four letters picked without replacement from {c: 1, k: 3, l: 3, e: 2, m: 2, z: 3}. Give prob of sequence clkk.