Mr Nkosi wants to know which teaching style the Grade 8 leamers prefer duning the national Covid-19 lockdown. He gives questionnaire M to each of the 175 grade 8 leamers and questionnaire N to (er। leamers from each of the five grade 8 classes. 1.2 .1 Which learners represent the population? 1.2 .2 Which leamers represent the sample?

\begin{tabular}{l}\( \frac{1}{6} \) von 24 \\ \( \frac{2}{3} \) von 24 \\ \( \frac{5}{6} \) von 24 \\ \hline\end{tabular}

9. Uppgiften ger max 4 poäng Betrakta summan \( 3+9+15+\ldots+3(2 n-1) \) a. Beräkna denna summa då \( n=5 \). b. Din vän Fatima påstår att \( s_{n}=3 n^{2} \). Visa med hjälp av induktion att Fatima har rätt

\( m \) decreased by half of \( n \)

\( \left. \begin{array} { l } { A = - 2 , D = - 3 , C = - 4 , D = 5 } \\ { 4 B - 4 C - 4 D + 4 A = } \end{array} \right. \)

11 Hur många procent är \( \begin{array}{lll}\text { a) } \frac{7}{10} & \text { b) } \frac{3}{5} \\ \text { c) } \frac{11}{50} & \text { d) } \frac{24}{200}\end{array} \) 7. Vilka av talen är lika me