Question
20 defective LED bulbs were mixed with 180 working LED bulbs. One bulb is selected randomly. What is the probability that the selected bulb is defective?
More Probability Questions
- A bag contains 4 white balls, 9 red balls, and 5 green balls. Two balls are drawn at random. Find the probability that the two balls are red.
- A bag contains x white balls, (x + 4) black balls and (x + 8) yellow balls. If probability of getting a black ball is 1/12 more than that of getting a whit...
- Two cards are drawn at random without replacement from a standard deck of 52 cards. Find the probability that both cards are red
- John is answering a survey with 3 questions, each with 2 options. Only one option is correct per question. If John answers randomly, what is the probabilit...
- In a lottery, there are 11 prizes and 22 blanks. A lottery is drawn at random. What is the probability of getting a prize?
- A container has 15 brown, 10 gray and 5 gold coins. Two coins are randomly chosen from the container, what is the probability that a brown and a gold coin ...
- A box contains 6 white balls, 5 black balls and 4 red balls. Two balls are drawn at random without replacement. What is the probability that both balls are...
- A bag contains 9 black and 10 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
- In how many ways can the letters of the word "EXAMPLE" be arranged, and what is the probability that all the vowels in these arrangements always appear tog...
- A box contains 4 red balls, 5 blue balls and 6 green balls. Three balls are drawn at random from the box without replacement. What is the probability that ...
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)