En una urna se tienen 4 fichas numeradas del 1 al 4, se realiza el siguiente experimento, se sacan 3 fichas seguidas de tal forma que una vez que se saca una esta se devuelve a la urna. Una vez extraidas las 3 fichas ¿Cuántas combinaciones posibles de números se tienen?

Read and choose the correct option. in colombia, all students are required to wear uniforms in public and private schools. uniforms in colombia consist of two sets; one for everyday use and one for physical education. everyday use uniforms for girls generally include a knee-length skirt, a white t-shirt, and a vest with white mid-calf socks. boys typically wear long dark pants and a long or short-sleeved shirt. the shirt usually has the school's symbol on the left side. the sports uniform consists of sweatpants, a collared t-shirt, and white sports shoes. the designs and the colors of the uniforms depend on the head of the school, and sometimes, the head of the school and the parents' preference. in spain, the use of school uniforms is not required in the public school at any stage. their use depends on school councils involving parents and the head of the school. however, it is customary to wear uniforms in private schools where typically girls wear a uniform shirt and jersey skirt, and boys wear pants, a white shirt, and a tie and sometimes a jacket. source: based on the text, what is a difference between spanish and colombian schools? a) the uniforms required b) the parent participation c) the principal's decision d) the choices for boys and girls

Read and choose the option with the correct verbs to complete the sentences. no prefiero hacer ejercicio. me gusta más aprender a pintar. pintar es mi pasatiempo favorito. me el arte y … ¡me los libros para aprender a pintar! pinto todos los días. gusta; encantan gustan; encanta encantan; gustan encanta; gusta

Mi hermano espera que el tren a tiempo. a. llegas b. llega c. llegue d. llegues