Respuesta :
the answer is 330
choose 4 from 11 people without arrangement is 11C4
choose 4 from 11 people without arrangement is 11C4
so theres 11 people inthe group. there are 11 possibilities for spot 1 of the 4. there are then 10 possibilitiesfor spot 2 of the 4. then 9 for spot 3 and 8 for spot 4. you wouldmultiply 11×10×9×8. so the answer is a) 7920