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A computer program converts a two-digit number into another number in five steps. The following example illustrates the operations on six two-digit numbers.
If the input is 19, then what is the output in step 5?
  • a)
    24
  • b)
    01
  • c)
    03
  • d)
    17
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A computer program converts a two-digit number into another number in...
To explain the step wise logic, let's take the first number of the input series; i.e. 15
Input: 15
Step-1: square of the sum of the digits i.e. (1+5)2 = 36
Step-2: sum of the digits of resultant of step-1 is taken i.e. 03 + 06 = 09
Step-3: sum of input and resultant of step-2 i.e. 15 + 09 = 24
Step-4: difference between the digits of resultant in step-3 i.e. 04 - 02 = 02
Step-5: difference between the input and resultant in step-4 i.e. 15 - 02 = 13
Input: 19
Step 1: (1+9)2 = 100
Step 2: 01 + 0 + 0 = 01
Step 3: 19 + 01 = 20
Step 4: 02 - 00 = 02
Step 5: 19 - 02 = 17
Hence, option 5
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