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

If \( 3^2 \) is calculated, what is the result?

Is the number 14 a prime number? Explain why or why not.

23. Raúl gana \( \$ 1800 \) pesos a la semana, pero paga \( \frac{2}{5} \) de su sueldo para su viaje de graduo- ción; ¿cuánto dinero representa la fracción?

Hockey is an 11 . a-side game, but a team may corsist of up to 16 players with uralimited substitutions allowod throughout a match of 70 minutes duration. foger captains the Buccancers hockey team. He has 16 players for today's match. Ho will play the whole match himsell, as will the goalkeeper. He intends to rotate all the other players in such a way that each of them spends the sarme rotal ampunt of time on the pitch. How ruich time should each player (werept foger and the goalkeeper) spend on the pitch during today's match?

7. 63459 sayısındaki rakamiarın yerieri değiştirilerek yazılabilen 5 basamaklı sayıların kaçııın 5 ile bölümünden ka- lan 4 tür? \( \begin{array}{llll}\text { A) } 24 & \text { B) } 36 & \text { C) } 48\end{array} \)