The sample space for tossing three fair coins is {HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}. What is theprobability of exactly two heads?
A) $\frac { 3 } { 8 }$
B) 3
C) $\frac { 1 } { 2 }$
D) $\frac { 5 } { 8 }$

Question

The sample space for tossing three fair coins is {HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}. What is theprobability of exactly two heads? 
A) $\frac { 3 } { 8 }$
B) 3
C) $\frac { 1 } { 2 }$
D) $\frac { 5 } { 8 }$

Quizplus · Accepted Answer

The outcomes with exactly two heads are HHT, HTH, and THH, which are 3 out of the 8 total outcomes, making the probability $\frac{3}{8}$.

The Sample Space for Tossing Three Fair Coins Is {HHH 38\frac { 3 } { 8 }83​

The Sample Space for Tossing Three Fair Coins Is {HHH $\frac { 3 } { 8 }$