context: ###List of Questions
  (1) Solve -12*b = -35*b + 92 for b.
  (2) Suppose 2*i + 126 = 20*i. What is the highest common divisor of i and 49?
  (3) How many millimeters are there in 47.72367 kilometers?
  (4) What is prob of sequence fe when two letters picked without replacement from {q: 1, p: 2, e: 1, z: 1, u: 1, f: 1}?
  (5) In base 7, what is -22 - 32?
q_1: (1) Solve -12*b = -35*b + 92 for b.
q_2: (2) Suppose 2*i + 126 = 20*i. What is the highest common divisor of i and 49?
q_3: (3) How many millimeters are there in 47.72367 kilometers?
q_4: (4) What is prob of sequence fe when two letters picked without replacement from {q: 1, p: 2, e: 1, z: 1, u: 1, f: 1}?
q_5: (5) In base 7, what is -22 - 32?