8. A bottle contains \( \frac{3}{7} \) litres of oil. How much oil do 5 such bottles contain? 9. A milkman sold 18 litres of milk at price ₹ \( 10 \frac{1}{3} \) per litre. How much money did he earn? 10. The price of a chair is ₹ \( 25 \frac{1}{3} \) and that of a table is ₹ \( 975 \frac{1}{2} \). How much money is needed to buy 2 t.

c) \( \sqrt[3]{x}=-4 \)

\( \cos _{x=1} \frac{d^{2} y}{d x^{2}} \frac{d x}{d x} \cos ^{3}-x^{2} y+3 x y^{2}=5 \) ds

he domain and the range of \( f(\boldsymbol{x})=\sqrt{16-x^{2}} \) is ..... \( \begin{array}{llll}\text { (a) }\left[\begin{array}{ll}D_{f}=R^{+} & \\ \left.\left.R_{f}=\right]-\infty, 4\right]\end{array}\right] & \text { (b) }\left[\begin{array}{l}\left.D_{f}=\right]-4,4[ \\ \left.R_{f}=\right] 0,4[ \end{array}\right] & \text { (c) }\left[\begin{array}{l}D_{f}=[-4,4] \\ R_{f}=[0,4]\end{array}\right] & \text { (d) }\left[\begin{array}{l}D_{f}=R \\ \left.R_{f}=\right] 4,-\infty[ \end{array}\right]\end{array} \)

Representador en listado y diagrama de árbol los siguientes experimentos aleatorios. - Lanzar 2 monedas \( y 2 \) dados de 5 caras. - Lanzar 1 moneda y 3 dados de 4 caras. - Lanzar 1 dado de 5 caras y 1 dado de 3 caras.

a) \( \int \frac{d x}{3} \)