Question

please explain me it's answer because answer is different while it's answer sheet say anything while I search in many source they same 48 and my answer also came 48 but sheet from which book this belong they say 31 please tell me if it's answer is 31 then explain me how this is it's answer???​

Answer 1

Answer:

here is the explained answer for the question

Answer 2

Answer:

Please. make me brainelist