Four options have been given, out of which three are alike in some manner and one is different. Select the odd one.

Correct option is A

Concept Used:
We need to determine the relationship between the pairs of numbers and identify which one is different from the others.
Solution: Let's analyze the difference between the two numbers in each pair:
For (32, 13):
The difference is 32 - 13 = 19.
For (51, 24):
The difference is 51 - 24 = 27.
For (42, 15):
The difference is 42 - 15 = 27.
For (72, 45):
The difference is 72 - 45 = 27.
From the above analysis, we see that in pairs (b), (c), and (d), the difference between the two numbers is 27, but in pair (a), the difference is 19.
Thus, (32, 13) is the odd one out.
Final Answer: (a) (32, 13)