Neco 2025 Data Processing Question 48

Practice objective / multiple choice question 48 from the 2025 Neco Data Processing examination.

Neco 2025 Data Processing Objective / Multiple Choice Medium Difficulty

Question 48 NECO • 2025 • DATA_PROCESSING • objective

A data processing system handles 10,000 records. During input validation, 2 % of the records contain errors. The validation routine detects 80 % of those errors. After processing, a verification step detects 50 % of the remaining undetected errors.\n\nHow many records are expected to be error‑free after the verification step, and what proportion of the original errors remain undetected? Express the proportion as a percentage to the nearest whole number.

A. 9,970 records; 15%

B. 9,990 records; 5%

C. 9,960 records; 20%

Correct Answer D. 9,980 records; 10%

Correct Answer

Correct Option:

9,980 records; 10%

This is Neco 2025 Data Processing Question 48. It is one of the objective questions from the 2025 Neco Data Processing examination.

Difficulty level: Medium .

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