Respuesta :

musiclover10045

No Heads TTTT = 4C0 = 1
One Heads HTTT = 4C1 = 4
Two Heads TTHH = 4C2 = 6
Three Heads HHHT = 4C3 = 4
Four Heads HHHH = 4C4 = 1

 

 Total chances = 1 + 4+ 6+4 +1 = 16

 

One head + 4 head = 4 +1 = 5

 

Total probability = 5/16