Question

Three unbiased coins are tossed. What is the probability of getting no heads.

• A. $\frac{1}{8}$
• B. $\frac{1}{4}$
• C. $\frac{3}{4}$
• D. $\frac{3}{8}$

Answer 1

The correct option is A $\frac{1}{8}$

Three coins tossed.

Total outcomes $=8$

Outcomes with no head are: $E=\left\{TTT\right\}$

Required Probability: $P\left(E\right)=\frac{1}{8}$