Número desconocido

¡Reto resuelto por Victor, Luis, Salvador, Rogelio, Enrique, Sebastián, Israel, Eduardo, José, Yessica, Erika, Yahir, Emanuel, Dafne, Erick, Edwin, Lizeth, Arlete, Abel, Daniel, Uciel, Eduardo, Hur, Laura, Joana, Tristan, Daniela, Juan, Jesús, Brayan, Abel, Noe, Alejandro, Guillermo, Jocelin, Tania, Javier, Lucia, Mayra, Cristopher, Jessica, Brandon, Fabiola, Claudia, Mildred, Lizbeth, Kevin, Aron, Samuel, Osvaldo, Brandon, Abraham, Francisco, Leidy, Gabriel, Ángel, Esmeralda, Noé, Irais, Fernanda, Aldo, Carlos, Itzel, Alan, Jennifer, Sayra, Brenda, Berenice, Brayan, Braulio, Mariana, Cristina, Vianney, Silvia, Dominic, Steffi, Alondra, Leonardo, Exal, Ángeles, Miguel, Samantha, Iris, Rodolfo, Areli, Jocelin, Jessica, Ixzayana, Lucero, Elisa, Diana, Moisés, Carol, Jacqueline, Elix, Evelyn, Eduardo, Yaret, Vanessa, Adamary, Janet, Francisco, Carla, Alexandra, Julio, Alejandro, Sandra, Abril, Roberto, Isaias, Fátima, Blanca, Manuel, Erik, Abi, Alondra, Yael, Tantcy, Alan, Gabriela, Yobana, Guadalupe, Irma, Kenya, Wendy, Karen, Oscar, Marco, Josué, Hugo, Irvin, Montserrat, Erasmo, Jassiel, Sonia, Liliana, Sergio, Jonathan, Teofilo, Iridian, Michael y Brianda!

Enviado por Casa Telmex SEMAR
Respuesta: Número 8