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]: Let h(m) = m. Let u be h(4). Suppose -q = u + 2. Let b(i) = i**2 + 6*i + 2. Let z be b(q). Calculate the greatest common divisor of z and 5.
[EX A]: 1

[EX Q]: Four letters picked without replacement from {t: 6, e: 2}. What is prob of picking 4 t?
[EX A]: 3/14

[EX Q]: Calculate prob of sequence qkh when three letters picked without replacement from {h: 4, k: 2, n: 3, q: 1}.
[EX A]:
1/90