context: ###List of Questions
  (1) What is prob of picking 3 k and 1 x when four letters picked without replacement from mxcmmmkffkkwkc?
  (2) What is -116938 minus -0.2?
  (3) How many weeks are there in 1679489.7 days?
  (4) Suppose -4*c - 31 = 17. Let u = 17 + c. What is the remainder when 13 is divided by u?
  (5) What is the next term in 393, 392, 391, 390, 389, 388?
q_1: (1) What is prob of picking 3 k and 1 x when four letters picked without replacement from mxcmmmkffkkwkc?
q_2: (2) What is -116938 minus -0.2?
q_3: (3) How many weeks are there in 1679489.7 days?
q_4: (4) Suppose -4*c - 31 = 17. Let u = 17 + c. What is the remainder when 13 is divided by u?
q_5: (5) What is the next term in 393, 392, 391, 390, 389, 388?