Question
span >A bag contains 15 white and some black balls. If the probability of drawing a black ball from the bag is thrice that of drawing a white ball, find the number of black balls in the bag.
More Probability Questions
- Three persons. A, B and C. are given the same puzzle to solve. The probability that A, B and C will solve the puzzle is. 3/5., 2/3., and 1/4respectively. F...
- Given that E and F are events such that P(E) = 0.7, P(F) = 0.4 and P(E ∩ F) = 0.3, find P(E|F) and P(F|E)
- A basket contains x black balls, (x + 3) white balls and (x + 6) yellow balls. If probability of picking a white ball is 1/11 more than that of picking a b...
- A company wants to pack 144 small boxes, 216 medium boxes, and 288 large boxes into cartons such that each carton contains the same number of boxes of each...
- Maria is taking a quiz that contains 3 questions, each with 5 options. Only one option is correct for each question. If Maria guesses all the answers, what...
- Two Dice are thrown simultaneously. Find the probability that the number on the first dice is more than the number of 2nd Dice.
- There are three people A, B and C who are competing in a 100-meter race. If A is 50% more likely to win as B and B is twice as likely to win as C then what...
- A box contains 12 yellow marbles, ‘x’ blue marbles and 12 white marbles. A box contains 5 yellow marbles, 2 blue marbles and 3 white marbles. The probabil...
- Two dice are rolled. What is the probability that the sum is greater than 9?
- What is the probability that a number selected from 1,2,3.......................68,69,70, is perfect square or a perfect cube?
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)