Question

151+151=302 how this answer came? I need the logic..

Answer 1

By adding 151 and 151 which the answer is 302.

Answer 2

after adding 151 + 151 then we will get 302 in this question there is no need of logic? only calculation .
after the calculation of oneplus one we will get to and then we have to add 5 + 5 we will get 10 then we have to take one carry so 1 + 1 + 1 carry so we will get 3.