API · no tools. This is the prompt and response recorded for this attempt; a full solution may not have been returned.
Problem Statement
This is a Korean CSAT mathematics multiple-choice problem. Solve it and put only the correct choice symbol, one of ①, ②, ③, ④, ⑤, inside \boxed{}.
Problem 27 A discrete random variableXtakes integer values from 0 to 4, and its probability mass function is given by P(X=x) = |2x−1| 12 (x= 0,1,2,3), a(x= 4), whereais a nonzero constant. Compute V 1 aX . [3 points] ①36 ②39 ③42 ④45 ⑤48
Ground Truth
④
Recorded model response / solution
Reasoning Process
\boxed{④}
Final Model Output
④
Comparative Analysis (P26) (Average across runs)
Averages use reported measurements only. Missing usage is not treated as zero.
Avg Time Taken
Motif 3
42.0
Solar Pro 4
17.1
Kimi K3
11.2
K-EXAONE-2
2.2
Avg Token Usage
Solar Pro 4
1261.7
K-EXAONE-2
1038.7
Kimi K3
761.7