ChatGPT is very good in brainstorming, analyzing, summarizing, organizing and generating creative contents. However, by default, ChatGPT does not perform well in solving PSLE, O-Level or A-Level type of Singapore style questions.
The trick is to use one of the GPTs (previously called plugins) from the GPT Store called Wolfram. Wolfram makes ChatGPT smarter by giving it access to powerful computation, accurate math, curated knowledge, real-time data and visualization through Wolfram|Alpha, the maker of Mathematica
Note that ChatGPT 4o is now free for use, even for unpaid users. However, usage is limited to about 15 t0 30 minutes per day. During this trial period, you can try out all the tips and techniques shared in this article, including the use of the Wolfram GPT. You will know your trial period is up when it ask you to wait for another 24 hours.