Answer:
Step-by-step explanation:
Answer: It's like a pattern you need to learn.
Explanation: uno, dos, tres, cuatro, cinco, seis, siete, ocho, nueve, diez, once, doce, trece, catorce, quince, dieciséis, diecisiete, dieciocho, diecinueve, veinte. These #'s are order.
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