context: ###List of Questions
  (1) What is 384 divided by -3?
  (2) Let v = -2/1793 + 19749/23309. Calculate the common denominator of v and 21/8.
  (3) What is 68/3 of a century in months?
  (4) What is prob of sequence dd when two letters picked without replacement from uddudd?
  (5) What is next in 168, 167, 164, 159, 152, 143?
q_1: (1) What is 384 divided by -3?
q_2: (2) Let v = -2/1793 + 19749/23309. Calculate the common denominator of v and 21/8.
q_3: (3) What is 68/3 of a century in months?
q_4: (4) What is prob of sequence dd when two letters picked without replacement from uddudd?
q_5: (5) What is next in 168, 167, 164, 159, 152, 143?