A coin is tossed three times. Find the probability of getting at least two heads.
A) $\frac { 1 } { 2 }$
B) $\frac { 7 } { 8 }$
C) $\frac { 1 } { 4 }$
D) $\frac { 1 } { 8 }$
E) $\frac { 3 } { 4 }$

Question

Quizplus · Accepted Answer

The total number of outcomes when a coin is tossed three times is $2^3 = 8$. The outcomes where we get at least two heads are: HHT, HTH, THH, and HHH. That's 4 out of 8 outcomes, so the probability is $\frac{4}{8} = \frac{1}{2}$.

A Coin Is Tossed Three Times 12\frac { 1 } { 2 }21​

A Coin Is Tossed Three Times $\frac { 1 } { 2 }$