Please help me with understanding the problem

#1

1 0 2 9 input for first array
3 4 5 6 7 input for second array
If we add we get 4 4 7 8 7

#2

Hi arvind,
Consider the array1 as 1,0,2,9 and array 2 as 3,4,5,6,7
The resultant array is add(array 1+ array2 ) so start from RHS of both array like add 9+7 gives 16. Now this 1 will be used as carry for summation with 2+6 gives 9.
I hope this marks your doubt resolved.