2022 CJC P2 Q7 The probability distribution for the random variable $X$ is shown in the table. Another random variable $Y$ is defined by $Y=2{{X}_{1}}+{{X}_{2}}$, where ${{X}_{1}}$ and ${{X}_{2}}$ are
These Ten-Year-Series (TYS) worked solutions with video explanations for 2007 A Level H2 Mathematics Paper 2 Question Q2 [Modified] are suggested by Mr Gan. For any comments or suggestions please
ACJC Discrete Random Variables Tutorial Q1 A biased six-sided die is such that $text{P}left( X=1 right)=p$ and $text{P}left( X=r+1 right)=frac{1}{2}text{P}left( X=r right)$, $r=1$, $2$, $3$, $4$, $5$ where $X$ denotes
These Ten-Year-Series (TYS) worked solutions with video explanations for 2009 A Level H2 Mathematics Paper 2 Question 8 are suggested by Mr Gan. For any comments or suggestions please contact
2012 NJC P2 Q7 [Modified] (a) Find the number of ways in which the letters of the word NATIONAL can be arranged if (i) there are no restrictions, [1] (ii)
2008 JJC P2 Q9 In a game played by two people $A$ and $B$, each player is given three cards with three different animal pictures printed on them. The players
2024 EJC Permutation And Combination Tutorial Tutorial Q7 A six digit number is to be formed from the digits $1$, $2$, $3$, $4$, $5$, $6$, $7$, $8$ and $9$. For
2015 VJC P2 Q7 A game is to be played between two players, $A$ and $B$. A bag contains $5$ balls each with $A$’s name and $8$ balls each with
2016 JJC P2 Q6 The table below shows the number of male and female students studying Chemistry, Physics and Biology at a private school. One of the students is chosen
2017 IJC BT2 Q7 The discrete random variable $X$ has probability function $text{P}left( X=x right)=left{ begin{matrix}kleft( frac{5}{2}-x right),,,,x=0,2, \kleft( x-2 right),,,,,,,,,,,x=3, \0,text{otherwise,} \end{matrix} right.$ where $k$ is a positive constant.