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).

Two letters picked without replacement from qsbvbbbqqvbs. Give prob of picking 2 q.
1/22

Let f(c) = 53*c + 6. Let p be f(3). What is the highest common divisor of p and 15?
15

Suppose -10*i = -11*i - 22. Let p = i - -74. Let g(x) = x**3 - 2*x**2 - 5*x + 1. Let k be g(4). What is the greatest common divisor of k and p?

13