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).

[Q]: Two letters picked without replacement from dmmkpmkkkmmdqqkmpd. What is prob of picking 2 p?
[A]: 1/153


[Q]: Two letters picked without replacement from emltz. What is prob of sequence el?
[A]: 1/20


[Q]: Let k(l) = 12*l**2 - 4 - 2*l**2 + 8 + l**3. Suppose -4*u - u = 50. What is the units digit of k(u)?
[A]:
4