Which of the following address(es) is/are exactly the same as the given address?
Given Address: Amit Sharma, Flat 21A, Green Residency, Bhopal, 462016
1. Amit Sharma, Flat 21A, Green Residency, Bhopal, 462016
2. Amit Sharma, Flat 21, Green Residency, Bhopal, 462016
3. Amit Sharma, Flat 21A, Green Residencies, Bhopal, 462016
4. Amit Sharma, Flat 21A, Green Residency, Bhopal, 462018

The correct answer is Only 1.

To determine which address is exactly the same as the given address, let us compare the given address character-by-character with each of the provided options.

Given Address:
Amit Sharma, Flat 21A, Green Residency, Bhopal, 462016

Comparison:

1. Option 1: "Amit Sharma, Flat 21A, Green Residency, Bhopal, 462016"
- Name: Amit Sharma (Matches)
- Flat Number: Flat 21A (Matches)
- Complex Name: Green Residency (Matches)
- City: Bhopal (Matches)
- Pincode: 462016 (Matches)
⇒ This address is an exact match.

2. Option 2: "Amit Sharma, Flat 21, Green Residency, Bhopal, 462016"
- Flat Number is "Flat 21" instead of "Flat 21A" (Does not match).

3. Option 3: "Amit Sharma, Flat 21A, Green Residencies, Bhopal, 462016"
- Complex Name is "Green Residencies" instead of "Green Residency" (Does not match).

4. Option 4: "Amit Sharma, Flat 21A, Green Residency, Bhopal, 462018"
- Pincode is "462018" instead of "462016" (Does not match).

Therefore, only address 1 matches the given address exactly.