Examining the relationship between the numbers in each pair:
Option 1: 7, 56
756=8
The second number is 8 times the first number.
Option 2: 13, 78
1378=6
The second number is 6 times the first number.
Option 3: 9, 64
964=7.111...
The second number is not a whole multiple of the first number.
Option 4: 11, 132
11132=12
The second number is 12 times the first number.
In options 1, 2, and 4, the second number is a whole number multiple of the first number.
In option 3, the second number is not a whole number multiple of the first number (64 is not divisible by 9).
Therefore, option 3 is different from the other three alternatives.