Question
In a jar, there are (x + 8) red balls, ‘x’ blue balls, and (x + 2) black balls. If the probability of picking two blue balls at random is (1/45), then find the value of ‘x’.
Since the number of balls cannot be negative, Therefore, x = 5More Probability Questions
- Bag has 7 red, 5 green, 8 blue. Two drawn w/o replacement. Probability both blue?
- When two dice are thrown, what is the probability that sum of the number appeared is 4 or 5?
- A piggy bank contains six 50 paise coins, nine Rs. 1 coin, and twelve Rs. 2 coins. One of the coins from the piggy bank fell and got lost. Find the probabi...
- The probability of selecting a rotten egg randomly from a basket of 1200 eggs is 0.22. What is the number of rotten eggs in the basket?
- Bag A contains 4 blue and 5 green balls, while Bag B contains 6 blue and 10 red balls. If one ball is drawn from bag 'A' and bag 'B', respectively, at rand...
- A number is randomly chosen from 1 to 100(both inclusive). What is the probability that it is divisible by 2, 3 or 5?
- A box contains 4 red, 5 blue, and 3 green balls. Two balls are drawn at random without replacement. What is the probability that the two balls drawn are of...
- Sita tells the truth in 80% of cases and Geeta tells the truth in 30% of cases. Find the probability that at least one of them tells the truth.
- A person wanted to visit four places Chennai, Bangalore, Delhi, and Mumbai in one trip. Find the probability of the person visiting Chennai immediately bef...
- Three persons i.e. ‘X’, ‘Y’ and ‘Z’, are given the same puzzle to solve. The probability that ‘X’, ‘Y’ and ‘Z’ will solve the puzzle is (4/7), (2/5) and (1...
Relevant for Exams:
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)