u/WinMajestic4005

Kindly tell me are o level and if se computer science papers variants same

Kindly tell me I remember mostly answers from o level mark schemes but sometimes when same question repeats it's answer in mark scheme is a bit changed as compared to one that I remembered so would I still get marks for the remembered question

Kindly tell me is there any method to do it because recently I faced a question which was too tough to do calculation without calculator