### 2022 HCI P2 Q11

2022 HCI P2 Q11 A cafeteria installed a vending machine which dispenses two types of coffee into disposable cups as follows: (I) Black coffee, $X$ ml, normally distributed with mean

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2022 HCI P2 Q11

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N1987 P1 Q18 [Modified]

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2020 HCI P2 Q8

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2020 HCI P2 Q7

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2022 DHS P2 Q11

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2017 AJC Promo Q8

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2017 IJC P2 Q6

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2022 SAJC P2 Q8

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2022 ACJC P2 Q7

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2022 DHS P2 Q7

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Timothy Gan
13th September 2023

2022 HCI P2 Q11 A cafeteria installed a vending machine which dispenses two types of coffee into disposable cups as follows: (I) Black coffee, $X$ ml, normally distributed with mean

Timothy Gan
13th September 2023

These Ten-Year-Series (TYS) worked solutions with video explanations for 1987 A Level H2 Mathematics Paper 2 Question 18 [Modified] are suggested by Mr Gan. For any comments or suggestions please

Timothy Gan
13th September 2023

2020 HCI P2 Q8 A set of $9$ cards are numbered $1$, $1$, $2$,$3$, $3$, $4$, $5$, $5$ and $6$. A round of matching game is played where two cards

Timothy Gan
13th September 2023

2020 HCI P2 Q7 A team of $15$ students was selected for an outdoor education trip. One student volunteered to be the trip leader while another volunteered as the assistant

Timothy Gan
12th September 2023

2022 DHS P2 Q11 Emma has a computer program that generates a random positive integer $X$. The probability distribution of $X$ is: $text{P}left( X=r right)=frac{a}{{{r}^{3}}}$, $rin {{mathbb{Z}}^{+}}$ and $a$ is

Timothy Gan
11th September 2023

2017 AJC Promo Q8 In order to construct a temporary shelter, three vertical poles $OP$, $AQ$ and $BR$ of heights $6$m, $8$m and $10$m respectively are planted firmly their bases

Timothy Gan
11th September 2023

2017 IJC P2 Q6 Seven red counters and two blue counters are placed in a bag. All the counters are indistinguishable except for their colours. Clark and Kara take turns

Timothy Gan
11th September 2023

2022 SAJC P2 Q8 In a game, two boxes have the following contents. Box $A$ contains $3$ green balls and $4$ white balls.Box $B$ contains $6$ green balls and $5$

Timothy Gan
11th September 2023

2022 ACJC P2 Q7 Archer and Betty took part in a competition comprising of at most $3$ games. Each game is either won by Archer or Betty. The first person

Timothy Gan
11th September 2023

2022 DHS P2 Q7 Commodity $X$ is traded four times a week from Monday to Thursday. The unit price of $X$ can only rise or fall on any day. If