Question
A bag contains (K - 2) red balls, 8 black balls, and 14 blue balls. If two balls are drawn randomly, the probability that both are black is 2/27. Calculate 180% of the difference between the number of red and blue balls.
More Probability Questions
- 21 defective pendrives got mixed with 189 non-defective pendrives. One pendrive is selected at random. Find the probability that the selected pendrive is d...
- 14 defective fans were accidentally mixed with 126 non-defective fans. One fan is randomly selected. Find the probability that it is a defective fan.
- If the letters of the word PLAYERS be arranged at random, what is the probability that there are exactly five letters between P and S?
- In a class of 30 students, 18 students like mathematics, 15 like science, and 8 like both subjects. What is the probability that a randomly selected studen...
- A bag contains 4 red balls, 5 blue balls, and 6 green balls. Two balls are drawn at random. What is the probability that both balls are of the same color?
- 35 defective headphones got packed with 105 non-defective headphones. A customer randomly chooses one headphone. Find the probability that it is defective.
- Two marbles are drawn without replacement from a jar containing 6 blue, 4 yellow, and 2 white marbles. What is the probability that both marbles are yellow...
- A bag contains 20 white and some black balls. If the probability of drawing a black ball from the bag is 2.5 times that of drawing a white ball, find the n...
- Three cards are drawn one after another with replacements from a pack of cards. What is the probability of getting the first card a Jack, the second card a...
- A boy attended 5 lab evaluations, each having a total of 100 marks. His scores were 88, 76, 92, 81, and 70. He randomly reveals one of the scores to his fr...
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
Think You're Ready for RBI Grade B?
RBI Grade B 2026 Phase 1 Memory Based Paper
- 200 Questions with Detailed Solutions
- Section-wise Coverage (GA, English, Quant & Reasoning)