context: ###List of Questions
  (1) Let q = 3 - -9. What is the highest common divisor of 6 and q?
  (2) Let j = 16 + 1. Solve -5*r + 8 = -j for r.
  (3) How many years are there in 5437.948 millennia?
  (4) Four letters picked without replacement from {y: 4, k: 6, l: 1, s: 2, v: 2}. What is prob of picking 1 y, 1 l, 1 v, and 1 k?
  (5) What is 434 to the power of 1/2, to the nearest integer?
q_1: (1) Let q = 3 - -9. What is the highest common divisor of 6 and q?
q_2: (2) Let j = 16 + 1. Solve -5*r + 8 = -j for r.
q_3: (3) How many years are there in 5437.948 millennia?
q_4: (4) Four letters picked without replacement from {y: 4, k: 6, l: 1, s: 2, v: 2}. What is prob of picking 1 y, 1 l, 1 v, and 1 k?
q_5: (5) What is 434 to the power of 1/2, to the nearest integer?