# Quod Erat Demonstrandum

## 2011/08/29

### 久違了的簡單幾何題

Filed under: Junior Form Mathematics,mathematics — johnmayhk @ 4:04 下午
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## 2011/08/25

### 無聊談整數

Filed under: Fun,mathematics — johnmayhk @ 9:22 下午
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$p$ 為大於 3 的質數，同學，試探究一下

$p^2\div 12$

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## 2011/08/24

### 無聊談談三角形數

Filed under: Fun,Junior Form Mathematics — johnmayhk @ 4:59 下午

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## 2011/08/20

### 無聊講數

Filed under: Fun,Junior Form Mathematics — johnmayhk @ 12:03 上午

【亂與序】
2009-06-30

(a) 1, -1/3, 1/5, -1/7, 1/9, -1/11, …

(b) 7, 8, 5, 3, 9, 8, 1, 6, 3, 3, 9, 7, 4, 4, 8, 3, 0, 9, 6, …

## 2011/08/19

### 某數算題

Filed under: Additional / Applied Mathematics,HKALE,NSS,Teaching — johnmayhk @ 6:34 下午

If three tickets are chosen at random without replacement from a set of 6n tickets numbered respectively 1, 2,…, 6n, what is the probability that the sum of the numbers on the numbers on the chosen tickets is 6n?

## 2011/08/17

### 還是數算

Filed under: Additional / Applied Mathematics,HKALE,NSS,Teaching — johnmayhk @ 11:29 下午

There are 10 empty boxes. 5 balls are going to put one by one into a randomly selected box. Find the probability that two of the boxes each contains 2 balls.

## 2011/08/13

### [TED] Kevin Slavin: How algorithms shape our world

Filed under: Fun — johnmayhk @ 10:29 上午

## 2011/08/12

### 數學教學途徑的探討（1979 年）

Filed under: Fun,mathematics,Teaching — johnmayhk @ 11:46 下午

## 2011/08/09

### Past papers 1964, 1971

Filed under: Additional / Applied Mathematics,Fun,HKALE,Pure Mathematics — johnmayhk @ 11:38 上午

Matriculation Examination (1964)

Pure Mathematics I,II
Applied Mathematics I,II

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## 2011/08/08

### 今日的數學教學研習班特刊（1978 年）

Filed under: Fun,Junior Form Mathematics — johnmayhk @ 11:08 下午