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).

[EX Q]: Three letters picked without replacement from {a: 8, u: 11, g: 1}. What is prob of picking 1 a and 2 u?
[EX A]: 22/57

[EX Q]: How many millimeters are there in six fifths of a centimeter?
[EX A]: 12

[EX Q]: Let j(b) = -b**3 - 5*b**2 - 6*b - 3. Suppose 5*f + 2*u = -25, 5*f + 25 = -0*u + u. Let m be j(f). Solve -4*n + 11 = m for n.
[EX A]:
-4