A roll number uses a variable structure based on the Region Code (first three digits):
Rule A: If the Region Code starts with '5' (e.g., 5xx), the Center Code is 5 digits long, immediately followed by a 2-digit Year Code.
Rule B: If the Region Code starts with '8' (e.g., 8xx), the Center Code is 4 digits long, immediately followed by a 3-digit Batch Code.
For the roll number 592123456723, what are the digits of the Center Code?
Show answer & explanation
Correct answer: B
Explanation
Given roll number: 592123456723
Region Code = first 3 digits = 592
Since it starts with 5, apply Rule A
Center Code = next 5 digits
So, Center Code = 12345
Hence, the correct answer is option 2.