Q. $A\ and\ B$ toss a coin alternately till one of them tosses heads and wins the game, their respective probability of winning are
A) $\frac{1}{4}and\frac{3}{4}$
B) $\frac{1}{2}and\frac{1}{2}$
C) $\frac{1}{3}and\frac{2}{3}$
D) $\frac{1}{5}and\frac{4}{5}$
Explanation
(c)
$A\ and\ B$ toss a coin alternately till one of them tosses heads and win the game, their respectively probabilities of winning are $\frac{1}{3}$ and $\frac{2}{3}$ respectively.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.