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Answer

Correct Option is 21

Solution:In this input output question only numbers is arranged in each step. Let us understand the logic behind it- In each step the numbers are arranged
In Step 1: all the even number (input) are multiplied with 3 and all the odd numbers are multiplied with 2.
Step 2: Addition of the digits with in the number.
Step 3: All number are arranged in descending order.
Step 4: The numbers in the previous step is divided by 2.
Input: 68 49 26 96 53 15
Step I: 204 98 78 288 106 30
Step II: 6 17 15 18 7 3
Step III: 18 17 15 7 6 3
Step IV: 9 8.5 7.5 3.5 3 1.5
 

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