CA Foundation Exam  >  CA Foundation Questions  >  What is the probability of making 3 correct g... Start Learning for Free
What is the probability of making 3 correct guesses in 5 true false answer type of questions?
Most Upvoted Answer
What is the probability of making 3 correct guesses in 5 true false an...
As u know probablity of right or wrong guess same =1/2 so 5C2*(1/2)^5 is answer 
Community Answer
What is the probability of making 3 correct guesses in 5 true false an...
Probability of Making 3 Correct Guesses in 5 True/False Questions

To calculate the probability of making 3 correct guesses in 5 true/false questions, we can use the binomial probability formula.
  • Number of Trials (n): 5 questions
  • Number of Successes (k): 3 correct guesses
  • Probability of Success (p): 0.5 (since it is a true/false question, the probability of guessing correctly is 0.5)
  • Probability of Failure (q): 0.5


Calculating Probability

The formula to calculate the probability of getting exactly k successes in n trials is:
P(k successes) = (n choose k) * p^k * q^(n-k)
Substitute the values into the formula:
P(3 successes) = (5 choose 3) * (0.5)^3 * (0.5)^(5-3)
P(3 successes) = (5!/(3!(5-3)!)) * (0.5)^3 * (0.5)^2
P(3 successes) = (10) * (0.125) * (0.25)
P(3 successes) = 0.3125 or 31.25%
Therefore, the probability of making 3 correct guesses in 5 true/false questions is 31.25%.
Explore Courses for CA Foundation exam
What is the probability of making 3 correct guesses in 5 true false answer type of questions?
Question Description
What is the probability of making 3 correct guesses in 5 true false answer type of questions? for CA Foundation 2024 is part of CA Foundation preparation. The Question and answers have been prepared according to the CA Foundation exam syllabus. Information about What is the probability of making 3 correct guesses in 5 true false answer type of questions? covers all topics & solutions for CA Foundation 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is the probability of making 3 correct guesses in 5 true false answer type of questions?.
Solutions for What is the probability of making 3 correct guesses in 5 true false answer type of questions? in English & in Hindi are available as part of our courses for CA Foundation. Download more important topics, notes, lectures and mock test series for CA Foundation Exam by signing up for free.
Here you can find the meaning of What is the probability of making 3 correct guesses in 5 true false answer type of questions? defined & explained in the simplest way possible. Besides giving the explanation of What is the probability of making 3 correct guesses in 5 true false answer type of questions?, a detailed solution for What is the probability of making 3 correct guesses in 5 true false answer type of questions? has been provided alongside types of What is the probability of making 3 correct guesses in 5 true false answer type of questions? theory, EduRev gives you an ample number of questions to practice What is the probability of making 3 correct guesses in 5 true false answer type of questions? tests, examples and also practice CA Foundation tests.
Explore Courses for CA Foundation exam

Top Courses for CA Foundation

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev