context: ###List of Questions
  (1) Calculate prob of sequence wx when two letters picked without replacement from {n: 2, w: 1, x: 1, l: 4, d: 2}.
  (2) What is 56508 divided by 4?
  (3) How many kilometers are there in 90.73232 micrometers?
  (4) Let y = 6 - 7. Let o = -2 - y. What is the units digit of (o + -1)*(-6)/4?
  (5) What is next in 35, 68, 101, 134, 167?
q_1: (1) Calculate prob of sequence wx when two letters picked without replacement from {n: 2, w: 1, x: 1, l: 4, d: 2}.
q_2: (2) What is 56508 divided by 4?
q_3: (3) How many kilometers are there in 90.73232 micrometers?
q_4: (4) Let y = 6 - 7. Let o = -2 - y. What is the units digit of (o + -1)*(-6)/4?
q_5: (5) What is next in 35, 68, 101, 134, 167?