TASK DEFINITION: Given a simple high-school level math question, you are required to solve it and provide the final answer. The final answer is always a single number. These questions can range from a variety of topics like simple arithmetic, solving equations, converting a quantity from one unit to another, finding remainders/GCD/LCM, finding probabilities etc. Each question has only one correct answer. This answer can be a positive or negative integer, a fraction or a decimal number. If the answer is a negative number use the hyphen (e.g. -42) symbol for the minus sign. For decimal numbers, do not add extra zeros after the decimal point. For fractional numbers, separate the numerator and denominator using a forward slash (e.g. 3/25).
PROBLEM: What is prob of picking 2 d when two letters picked without replacement from tqqqqqttdtqdqq?

SOLUTION: 1/91

PROBLEM: Let a(g) = g**3 - 2*g**2 + g - 2. Let v be a(3). Let x = v + 15. What is the units digit of x?

SOLUTION: 5

PROBLEM: Let k(j) = 2*j**2 - 2. Let i be 1 + (24/(-2) - 0). Let b = i + 21. What is the lowest common multiple of b and k(2)?

SOLUTION:
30