Business Data Verification (KYC)

CodingStripeLast reported September 2026High Frequency
Reported
21× across candidate reports
First seen
June 2025
Last reported
September 2026
Reported outcome
mixed

Problem Overview

You are given a single multi-line string representing a CSV dataset. Each row contains 6 comma-separated columns: col1, col2, col3, col4, col5, col6. The first row is a header and should be skipped. For each subsequent row, determine whether it is VERIFIED or NOT VERIFIED based on the following rules…

  • 7 candidate-reported follow-ups — the exact probes interviewers asked, with the trigger for each
  • The rest of the problem statement — full requirements, constraints, and edge cases
  • Approach and trade-offs — what passing candidates did, and the mistakes that sink people
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Verified Source
Every question is reconstructed from multiple independent candidate reports. Verbatim follow-ups, not invented ones.
Codex Fact-Checked
Technical claims, formulas, and scale numbers are reviewed against primary sources.
Interviewer Follow-ups
The exact follow-ups reported by candidates, with the trigger that prompts each one — plus the mistakes that sink people.
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