context: ###List of Questions
  (1) Suppose 0*l = -l + 56. Let y = l - 6. What is the highest common divisor of 10 and y?
  (2) Solve 0 = -4*j - 906 + 894 for j.
  (3) In base 13, what is 226 - -3?
  (4) How many nanoseconds are there in five quarters of a microsecond?
  (5) Calculate prob of picking 3 q when three letters picked without replacement from {q: 4, g: 6}.
q_1: (1) Suppose 0*l = -l + 56. Let y = l - 6. What is the highest common divisor of 10 and y?
q_2: (2) Solve 0 = -4*j - 906 + 894 for j.
q_3: (3) In base 13, what is 226 - -3?
q_4: (4) How many nanoseconds are there in five quarters of a microsecond?
q_5: (5) Calculate prob of picking 3 q when three letters picked without replacement from {q: 4, g: 6}.