context: ###List of Questions
  (1) In base 16, what is 4 + e?
  (2) What is the common denominator of -1 + 1 + (-1016)/(-384)*4 and 33/8?
  (3) Solve 2*n + 15 = 3*j, 0 = -39*j + 41*j - 4*n - 10 for j.
  (4) Three letters picked without replacement from {f: 10, s: 4}. Give prob of picking 3 f.
  (5) What is 1/4 of a kilogram in grams?
q_1: (1) In base 16, what is 4 + e?
q_2: (2) What is the common denominator of -1 + 1 + (-1016)/(-384)*4 and 33/8?
q_3: (3) Solve 2*n + 15 = 3*j, 0 = -39*j + 41*j - 4*n - 10 for j.
q_4: (4) Three letters picked without replacement from {f: 10, s: 4}. Give prob of picking 3 f.
q_5: (5) What is 1/4 of a kilogram in grams?