Can you explain the answer of ques 7?

#1

the answer is c and i am not geeting it .

#2

Hello @anshulgurawalia there’s a prerequisite to this problem that is

a[i]= *(a+i)

similarly

a[i][j]= *(a[i]+j) = *( *(a+i) + j )

so sum is nothing but arr[i][i++]
Now try to calculate it own you on as you know the trick.

#3

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