New Enroll in RBI Grade B New Batch - Starts on May 21

Practice Probability Questions and Answers

Two schools, A and B participate in a Quiz competition. The probability of A’s winning is 3/7 and the probability of B’s winning is 3/5. What i...
A letter is taken out at random from ‘CHACHAKE’ and another is taken out from ‘PATAKHE’. The probability that they are the same letter is ...
One bag contains 5 yellow hats and 4pink hats. Another bag contains 3 yellow hats and 7pink hats. If one hat is drawn from each bag, what is the probabilit...
What is the probability that a number selected from 1,2,3.......................68,69,70, is perfect square or a perfect cube?
A basket contains 3 pink, 4 blue and 5 yellow wools. If three wools are picked at random, what is the probability that either all are blue or either all ar...
If the letters of the word PARAM are arranged at random, what is the probability that all vowels will come together?
If a coin is tossed repeatedly and the head appears for the first 94 times then what is the probability that the tail appears on the 95th toss?
A box contains 7 blue and 7 green balls. The probability of drawing three balls of the same colour is
If a coin is tossed 10 times then what is the probability of getting three heads?
Tokens numbered 1 to 350 are in a bag. What is the probability that the Token drawn has a number which is a multiple of 6 or 7?
A basket contains 3 yellow, 5 purple and 3 red flowers. If 3 flowers are drawn at random, what is the probability that at least two are of same colour?
A box contains 5 red, 6 green and 3 yellow balls. 2 balls are drawn at random. What is the probability that they are not of the same colour?
If the letter of the word Apples is arranged at random, what is the probability that all the vowels comes together?
There are 5 Red caps, 3 Green caps and 2 Blue caps in a box. 4 caps are chosen at random. What is the probability of their being 2 Red and 2 Blue caps?
Two hats are picked at random, what is the probability that one is blue and one is yellow?
Two hats are picked at random, what is the probability that all hats are of green colour?
One five letter word is to be formed taking all letters – U, Z, M, O and Q. What is the probability that this formed word will contain all vowels togeth...
5 coins are tossed together. What is the probability of getting exactly 3 tails?
In a lottery there are 5 prizes and 50 blanks. A lottery is drawn at random. What is the probability of getting the prize? ...
Two cards are drawn from a pack of 52 cards. The probability that 1 is Ace and 1 is Queen is?
In a box there are 12 orange, 5 white, and 7 blue balls. One ball is picked up randomly. What is the probability that it is neither white nor blue?...
A bag contains 7 red gems, 8 yellow gems and 5 green gems . 3 gems are drawn randomly. What is the probability that the gem...
A bag contains 5 red bottles, 6 yellow bottles and 8 green bottles . 3 bottles are drawn randomly. What is the probability that ...
A bag contains 10 red books, 7 yellow books and 7 green books . 3 books are drawn randomly. What is the probability that the&nbs...
A bag contains 5 red books, 7 yellow books and 7 green books . 3 books are drawn randomly. What is the probability that the ...
What will be the probability of choosing one red and one green ball from a basket containing 4 red and 5 green balls if two balls are drawn randomly?
A bag contains 6 balls of which 3 are red and 3 are black. They are drawn successively without replacement. What is the probability that colors are alterna...
There are 4 red balls, 5 blue balls and 3 green balls in a jar. 2 balls are drawn at random. Find the probability that both balls are either green or red.
22 defective pens are accidentally mixed with 136 good ones. It is not possible to just look at a pen and tell whether or not it is defective. One pen is t...
24 defective pens are accidentally mixed with 120 good ones. It is not possible to just look at a pen and tell whether or not it is defective. One pen is t...
The probability of selecting a rotten apple randomly from a heap of 900 apples is 0.18. What is the number of rotten apples in the heap? ...
The probability of selecting a rotten apple randomly from a heap of 600 apples is 0.14. What is the number of rotten apples in the heap?
The probability of selecting a rotten apple randomly from a heap of 250 apples is 0.20. What is the number of rotten apples in the heap? ...
The probability of selecting a rotten apple randomly from a heap of 1050 apples is 0.36. What is the number of rotten apples in the heap?
The probability of selecting a rotten apple randomly from a heap of 150 apples is 0.28. What is the number of rotten apples in the heap?
The probability of selecting a rotten apple randomly from a heap of 100 apples is 0.20. What is the number of rotten apples in the heap? ...
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 numb...
A bag contains 12 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 numb...
A bag contains 13 white and some black balls. If the probability of drawing a black ball from the bag is twice that of drawing a white ball, find the numbe...
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...

More Topics

Today's Class

There is no live class for today.