Sets \( A , B \) , and \( C \) are subsets of the universal set \( U . \) These sets are defined as follows. \( U = \{ f , g , h , p , q , r , x , y , z \} \) \( A = \{ f , g , q , r \} \) \( B = \{ g , h , p , r , x \} \) \( C = \{ q , r , x , y \} \) Find \( ( B ^ { \prime } \cap A ) \cup C \) . Write your answer in roster form or as \( \varnothing \) . \(( B ^ { \prime } \cap A ) \cup C = \square \)

6. Se mezclan 1800 kg , de harina de 0,42 €/kg con 3500 kg de harina de \( 0,54 € / \mathrm{kg} \). ¿Qué precio tiene el kilo de la mezcla? SOLUCIón: \( 0,5 \in / \mathrm{kg} \);

1. Quante domande! Moltiplica un numero naturale per se stesso. Come si chiama il numero che hai ottenuto?

1. Grade 7 leamers were asked to write the figure below in words. What was their response? \[ 349875.04 \]

12 Men or 15 women can do a piece of work in 21 days. Find the number of days required to complete the same work by 6 men and 10 women.

13. A seller uses 930 gm in place of one kg to sell his goods. Find his actual \% profit or loss, when he sells his article on \( 3 \% \) gain on cost price : \( \begin{array}{ll}\text { (a) } 8 \frac{70}{93} \% & \text { (b) } 9 \frac{10}{93} \% \\ \text { (c) } 10 \frac{70}{93} \% & \text { (d) None of these }\end{array} \)