Respuesta :

Sample space for tossing 2 coins = (H, H), (H, T), (T, T), (T, H)

P(Exactly one head) = (H, T) (T, H) = 2 events
P( E) = 2/4 = 1/2

In short, Your Answer would be 1/2

Hope this helps!
answer=1/2 there you go