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 sequence ew when two letters picked without replacement from {w: 1, e: 2}?

SOLUTION: 1/3

PROBLEM: Two letters picked without replacement from emltz. What is prob of sequence el?

SOLUTION: 1/20

PROBLEM: Suppose b + 2*b = 0. Suppose -4*v + 1 = -11. Solve b = -n + v - 2 for n.

SOLUTION:
1