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Advanced Maths Predictions/Thoughts (6 Viewers)

coolcat6778

coolcat6778

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SS173 said:
NESA documents mention about making the future exams more conceptual . This exam is an example. The questions are not too hard. But they require a good knowledge of the concepts.
I think the main problem here is the lack of the necessary resources for the students. The level of the questions in the existing textbooks are well below this exam.
For example probability question 19 would be solved easily by using Law of total Probability. But it is not mentioned in the syllabus and there is no example even in Cambridge textbook.
They are forcing the students to go to tutors.
Click to expand...
this isn't a good thing, btw. conceptual is just another code word for dumbing the subject down. I've noticed there is so much writing required in the 2024 paper and probably the 2025 paper as well.
 
coolcat6778

coolcat6778

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SS173 said:
NESA documents mention about making the future exams more conceptual . This exam is an example. The questions are not too hard. But they require a good knowledge of the concepts.
I think the main problem here is the lack of the necessary resources for the students. The level of the questions in the existing textbooks are well below this exam.
For example probability question 19 would be solved easily by using Law of total Probability. But it is not mentioned in the syllabus and there is no example even in Cambridge textbook.
They are forcing the students to go to tutors.
Click to expand...
Do you want to know what's funny?
This simple annuities question isn't present in the Cambridge textbook. Crazy I know. I only knew how to do this thanks to Maths in Focus textbook lol. I never did questions in Maths in Focus for financial maths as I didn't have the time to but their worked examples did help a lot for this question. In fact, I didn't think it was in the syllabus as they've never asked a question like this in the past 4 years, it's normally depreciation.

1761197978201.png
People glaze the Cambridge textbook way too much than deserved. It doesn't even cover stuff like "dummy variables" for Maths Extension 2. I've never heard of a dummy variable until after the exams after people called them dummy variable questions.
 
Last edited:
S

SS173

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The law of total probability states that if you have a set of mutually exclusive and exhaustive events (a partition of the sample space), the probability of a target event can be found by summing the probabilities of that event occurring under each of the partitioning events.

It is expressed as : P(A)=P(A|B1)P(B1) + P(A|B2)(P(B2) +...+ P(A|Bn)(P(Bn)

In Question 19, you can easily calculate P(W) by using this formula.

Please check the solution in :

2025_HSC_Mathematics_Advanced_NSW_Maths_solutions.pdf

drive.google.com drive.google.com
 
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