context: ###List of Questions
  (1) How many millilitres are there in 50619.63 litres?
  (2) Solve -12*h + 14 = 2*h for h.
  (3) Calculate 0.85*-2.
  (4) Suppose -25 = -3*c + 29. What is the highest common factor of 18 and c?
  (5) What is prob of sequence jijr when four letters picked without replacement from {r: 1, i: 1, j: 2}?
q_1: (1) How many millilitres are there in 50619.63 litres?
q_2: (2) Solve -12*h + 14 = 2*h for h.
q_3: (3) Calculate 0.85*-2.
q_4: (4) Suppose -25 = -3*c + 29. What is the highest common factor of 18 and c?
q_5: (5) What is prob of sequence jijr when four letters picked without replacement from {r: 1, i: 1, j: 2}?