context: ###List of Questions
  (1) Suppose 5*p + r + 65 = 472, 3*p - 5*r = 233. Let s(q) = -4*q - 3. Let g be s(-3). What is the greatest common factor of p and g?
  (2) What is 7/4 of a millennium in decades?
  (3) What is 51*(-5)/35 + 7?
  (4) Four letters picked without replacement from {r: 4, u: 2}. What is prob of sequence urru?
  (5) Let u(v) = -v + 5. Let t be u(2). Solve t*x + 21 = 3*r, -4*x + r = -0*r + 22 for x.
q_1: (1) Suppose 5*p + r + 65 = 472, 3*p - 5*r = 233. Let s(q) = -4*q - 3. Let g be s(-3). What is the greatest common factor of p and g?
q_2: (2) What is 7/4 of a millennium in decades?
q_3: (3) What is 51*(-5)/35 + 7?
q_4: (4) Four letters picked without replacement from {r: 4, u: 2}. What is prob of sequence urru?
q_5: (5) Let u(v) = -v + 5. Let t be u(2). Solve t*x + 21 = 3*r, -4*x + r = -0*r + 22 for x.