A university uses a roll number system: COLLEGE (3) + YEAR(2) + STREAM(2) + SERIAL(4). If there are 150 colleges, 5 years of courses, 25 streams, how many students can be uniquely identified?
Show answer & explanation
Correct answer: B
Explanation
COLLEGE(3) + YEAR(2) + STREAM(2) + SERIAL(4)
Given:
College = 150
Year = 5
Stream = 25
SERIAL(4) ⇒ 0000 to 9999 = 10,000 students
Total unique roll numbers:
= 150 × 5 × 25 × 10,000
= 187,500,000