Chapter 7 - Section 7.1 - Sample Spaces and Events - Exercises - Page 455: 3

$S=${(T,T,T),(T,T,H),(T,H,T),(H,T,T),(T,H,H),(H,T,H),(H,H,T),(H,H,H)} $E=${(T,T,T),(T,T,H),(T,H,T),(H,T,T)}

Three coins are tossed. The sample space is $S=${(T,T,T),(T,T,H),(T,H,T),(H,T,T),(T,H,H),(H,T,H),(H,H,T),(H,H,H)} The result is at most one head: $E=${(T,T,T),(T,T,H),(T,H,T),(H,T,T)}