context: ###List of Questions
  (1) Suppose -a - 4*i + i - 13 = 0, 2*i + 10 = 0. Suppose a = -5*g + l, 4*l - 10 = -2. Suppose 2 = 5*j - 2*q, -j - 2*q + 13 - 3 = g. Solve -j*k = 3*k + 5 for k.
  (2) Convert 7241.819 nanometers to meters.
  (3) Let r be 31 + 5 + (-3 - 0). Let h(c) = -c**2 - 3*c + 3. Let n be h(-3). Suppose -4*k - 14 = -s, n*s - k - 62 = k. What is the highest common factor of r and s?
  (4) Calculate prob of picking 2 x and 1 f when three letters picked without replacement from {f: 11, h: 2, x: 6}.
  (5) Evaluate (((-4)/(-10))/(3/(-15)))/(-2).
q_1: (1) Suppose -a - 4*i + i - 13 = 0, 2*i + 10 = 0. Suppose a = -5*g + l, 4*l - 10 = -2. Suppose 2 = 5*j - 2*q, -j - 2*q + 13 - 3 = g. Solve -j*k = 3*k + 5 for k.
q_2: (2) Convert 7241.819 nanometers to meters.
q_3: (3) Let r be 31 + 5 + (-3 - 0). Let h(c) = -c**2 - 3*c + 3. Let n be h(-3). Suppose -4*k - 14 = -s, n*s - k - 62 = k. What is the highest common factor of r and s?
q_4: (4) Calculate prob of picking 2 x and 1 f when three letters picked without replacement from {f: 11, h: 2, x: 6}.
q_5: (5) Evaluate (((-4)/(-10))/(3/(-15)))/(-2).