Mathology

29/07/2026

22/12/2024

"All work and no play makes Jack a dull boy."
So let's play this logic puzzle. Leave your answer at the comment and I will reply you with the correct answer.

Some friends are having a Christmas party. The sum of the ages of the three eldest friends takes up 60% of the total age of the group, and the ages of the three youngest friends add up to 25% of the total age of the group.
How many people are there at the party?

21/12/2024

Quadratic Functions
Go through the question and my worked solution below and attempts the 2021 past year question that follows.

20/12/2024

Functions explained in one diagram.
Go through this 2022 past year question and my worked solution below and attempts the question that follows.

19/12/2024

Index Number
Go through the question and my worked solution below and attempts the 2022 past year question that follows.

18/12/2024

The two quantities in Vectors: Direction and Magnitude. If you have only direction, you ain't goin’ nowhere; magnitude without direction, you're just running aimlessly.
向量(Vector)含方向与长度：只有方向没长度，你只在原地跑步；有长度没方向，你就像无头苍蝇四处乱撞！
Go through this 2022 past year question and attempt Q11. in the comment.

17/12/2024

System of Equations
Go through part (a) of the question and then attempt part (b).

And also try the following question:

Amira wants to buy farewell gifts for her friends. She has RM150 to spend. A pen costs RM2, a mug costs RM5 and a notebook costs RM3. The number of mugs exceeds the number of notebooks by 10. The total number of items is 50.
How many of each item should Amira purchase?

14/12/2024

Coordinate Geometry
Revise the formula on the first pic and attempt the question that follows. If in doubt, go through my worked solution.

13/12/2024

Solution of Triangles - Sine Rule, Cosine Rule, Area of Triangle, Heron's formula, Ambiguous case
Try the question in the last pic.

12/12/2024

Go through the example and attempt the question on the last picture.