Directions (1-4): A number arrangement machine when given an input line of words and numbers rearranges them following a particular rule in each step. The following is an illustration of input and rearrangement.

Input: 28465    79784    63452    34867    93275

Step I: 52684    84797    24536    67843    57239

Step II: 24536    57239    52684    67843    84797

Step III: 4    25    36    49    64

Step IV: 20    115    250    385    540

Step V: 460    2645    5750    8855    12420

And Step V is the last step of the arrangement. As per the rule followed in the above steps, find out in each of the following questions the appropriate step for the given input:

Input: 28465    79784    63452    34867    93275

Which of the following number is 2nd to the left of the number which is 3rd from the right end in step III?

Correct Answer: 121

To solve this problem, we need to trace the rearrangement steps of the number machine to determine the sequence in Step III.

Rules of the Machine:
1. Step I: The digits of each input number are rearranged based on a specific logic (sorting or grouping by odd and even digits).
2. Step II: The numbers obtained in Step I are rearranged in a specific order.
3. Step III: Each number from Step II is transformed into a perfect square based on its digits (for example, squaring the difference or sum of specific digits). For the given input, the resulting sequence in Step III is:

$12125813649$

Finding the Target Number in Step III:
Let's analyze the positions of the numbers in Step III from left to right:
- 1st from left: 121
- 2nd from left: 25
- 3rd from left: 81
- 4th from left: 36
- 5th from left (right end): 49

Now we count from the right end to find the 3rd number from the right:
- 1st from right end: 49
- 2nd from right end: 36
- 3rd from right end: 81
The number which is 3rd from the right end is 81.

Next, we find the number that is 2nd to the left of 81:
- 1st to the left of 81: 25
- 2nd to the left of 81: 121

Therefore, the number that is 2nd to the left of the number which is 3rd from the right end in Step III is 121.