context: ###List of Questions
  (1) Let z(m) = -3*m**3 + m**2 + 4*m + 3. Let v be z(-1). Calculate the highest common factor of 21 and v.
  (2) Convert 692.2908 days to seconds.
  (3) What comes next: 223, 452, 681, 910, 1139?
  (4) Calculate prob of sequence lrl when three letters picked without replacement from lrrllllrllllll.
  (5) Divide -352 by -4.
q_1: (1) Let z(m) = -3*m**3 + m**2 + 4*m + 3. Let v be z(-1). Calculate the highest common factor of 21 and v.
q_2: (2) Convert 692.2908 days to seconds.
q_3: (3) What comes next: 223, 452, 681, 910, 1139?
q_4: (4) Calculate prob of sequence lrl when three letters picked without replacement from lrrllllrllllll.
q_5: (5) Divide -352 by -4.