2010 Meridian Junior College (MJC) H2 Mathematics Preliminary Examination
Meridian Junior College (MJC) 2010 H2 Mathematics Preliminary Examination mjc 2010 h2 math prelim verified
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Achevas Solutions: High-quality A-Level 2010 Paper 1 and Paper 2 solutions for the actual national exam. 9740 had PGFs (Probability Generating Functions)
A random variable $X$ has the probability distribution function $P(X = x) = \begincases kx & x = 1, 2, 3 \ 0 & \textotherwise \endcases$, where $k$ is a constant. Find $k$ and $E(X)$. 3 \ 0 & \textotherwise \endcases$