Which of the following addresses are identical to each other: 1. Dr Ruchi Jain 4/88, Skyline Residency, Jaipur, 302001 2. Dr. Ruchi Jain 4/88, Skyline Residency, Jaipur , 302001 3. Dr. Ruchi Jain 4/88, Skyline Residency, Jaipur , 302001 4. Dr Ruchi Jain 4/88, Skyline Residency, Jaipur , 302001

Correct — B.
Rule: compare field by field and treat any changed mark as a difference.

Addresses 2 and 3 match in every character, starting with the title Dr. with a full stop.

Addresses 1 and 4 both write Dr without the full stop, so neither can pair with 2 or 3 → option (b).

Why the others are wrong

• (a)
  1 and 2 — 1 and 2 differ in the title: address 1 writes Dr with no full stop, address 2 writes Dr. That one mark is enough.
• (c)
  2 and 4 — 2 and 4 differ in the title. Address 2 has Dr. with a full stop and address 4 has Dr without it.
• (d)
  3 and 4 — 3 and 4 differ the same way: address 3 writes Dr. and address 4 writes Dr, so the full stop splits them.

All four addresses carry the same name, house number, building, city and PIN, so the title splits them: Dr. or Dr. A reader scanning for meaning sees four copies of one address.

Address 1 differs in one more place: it prints Jaipur, where addresses 2, 3 and 4 print Jaipur , with a space before the comma. That only widens the gap the title already opens.

Compare the first field across all four before anything else. It puts addresses 2 and 3 together, and 2 and 3 is an offered pair.

Key facts

• Dr and Dr. are different strings: the full stop counts.
• Addresses 2 and 3 read Dr. Ruchi Jain, and addresses 1 and 4 read Dr Ruchi Jain.
• Comparing one field at a time is faster and safer than reading each address whole.

Common traps

• Reading Dr and Dr. as the same title
• Checking only the house number, building, city and PIN, whose words and digits are the same in all four

No directly related past PYQ was found.