Correct Answer: 6514

Solution : Let's check the options –
First option: 8948; The first and the last digit of the number is 8.
Second option: 3463; The first and the last digit of the number is 3.
Third option: 6514; The first and the last digits of the number are 6 and 4.
Fourth option: 5725; The first and the last digit of the number is 5.

So, the third option is different from the other three options because the first and the last digits of the given number are not similar. Hence, the third option is correct.