Public viewer
The journey of every round
Every round-trip in the corpus is public. Open one to see the prompt, the zero-point index, the baseline response, the enhanced response, and how each grader read the difference. Leave a comment if a grader's reading lands — or doesn't.
Given f(x) = (x - 4) / 3, state the inverse function f^(-1)(x). Give the inverse in explicit form.
State the distributive law of intersection over union for three sets A, B, C. Give the identity in set notation.
Compute the sum of the arithmetic series 3 + 7 + 11 + ... + 99. Give the exact integer.
State De Morgan's laws for two sets A and B. Give both identities in set notation.
A factory produces widgets and 2% are defective. If you sample 50 widgets, what is the probability that exactly 1 is defective?