9th Class
Mathematics
Probability
Question Bank
Probability
question_answer
The probability of guessing the correct answer to a question is \[\frac{x}{2}.\]If the probability of not guessing the correct answer to this question is \[\frac{2}{3},\] then \[x=\_\_\_\_.\]
A) 2
B) 3
C) \[\frac{2}{3}\]
D) \[\frac{1}{3}\]
Correct Answer:
C
Solution :
Probability of guessing correct answer Probability of not guessing correct answer Now, according to question,