Question
Question: Two persons A and B take turns in throwing a pair of dice. The first person to through 9 from both d...
Two persons A and B take turns in throwing a pair of dice. The first person to through 9 from both dice will be avoided the price. If A throws first then the probability that B wins the game is
A
9/17
B
8/17
C
8/9
D
1/9
Answer
8/17
Explanation
Solution
The probability of throwing 9 with two dice = 4/36
= 1/9.
\ The probability of not throwing 9 with two dice = 8/9. If A is to win he should throw 9 in 1st or 3rd or 5th attempt.
If B is to win, he should throw, 9 in 2nd, 4th attempt.
B’s chances = 