How do you write numbers in Spanish

Which one of the following is a trick used in spanish to identify the right hand? touch the tips of your index fingers with the tips of your thumbs. the hand that forms a lowercase b is your mano derecha. touch the tips of your index fingers with the tips of your thumbs. the hand that forms a lowercase d is your mano izquierda. touch the tips of your index fingers with the tips of your thumbs. the hand that forms a lowercase d is your mano derecha.

Angela tiene mucha en su computadora para guardar muchas cosas

Choose the best spanish word to correctly complete the sentence. siete veintiocho treinta doce cien cincuenta y dos treinta y un dias en el mes de febrero anos en un siglo (century) semanas en un ano dias en una semana meses en un ano dias en el mes de abril dias en el mes de diciembre