Identify Matching Examination Centre Codes

The question requires finding a pair of roll numbers from the given list that share the same examination centre code. The centre code is defined as the first three digits of the roll number.

Analyze Roll Number Pairs

We need to examine each option to see if the first three digits of the two roll numbers in the pair are identical.

Option 1: 908325 and 908187

• Roll Number 1: $908325$. The first three digits (centre code) are $908$.
• Roll Number 2: $908187$. The first three digits (centre code) are $908$.
• Comparison: The centre codes $908$ and $908$ match.

Option 2: 332896 and 333782

• Roll Number 1: $332896$. The first three digits (centre code) are $332$.
• Roll Number 2: $333782$. The first three digits (centre code) are $333$.
• Comparison: The centre codes $332$ and $333$ do not match.

Option 3: 814752 and 812783

• Roll Number 1: $814752$. The first three digits (centre code) are $814$.
• Roll Number 2: $812783$. The first three digits (centre code) are $812$.
• Comparison: The centre codes $814$ and $812$ do not match.

Option 4: 184843 and 189901

• Roll Number 1: $184843$. The first three digits (centre code) are $184$.
• Roll Number 2: $189901$. The first three digits (centre code) are $189$.
• Comparison: The centre codes $184$ and $189$ do not match.

Conclusion

Only the pair in Option 1, $908325$ and $908187$, has the same first three digits, indicating they belong to the same examination centre.