1+1+1+1+1+1+1+1+1+1+1=what is the answer?

Dear student,
we know,
1+1=2
1+1+1=3
1+1+1+1=4
and so on.
So, if we add n 1's then the sum will be n.
Here we have, 1+1+1+1+1+1+1+1+1+1+1 which is the sum of 11 1's.
So, the sum will be equal to 11.
Hence, 1+1+1+1+1+1+1+1+1+1+1=11

Regards!