- ‘A’ and ‘B’ play a game involving tossing a coin 4 times. ‘A’ wins if exactly two heads appear. Otherwise, ‘B’ wins. Find the probability t...
If 2 pens are drawn at random what is the probability that none of them is blue?
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 ...
In a box, the ratio of green balls to yellow balls is 3:5. If 9 balls of each colour are added, the new ratio becomes 6:9.
Find the number of yel...
In a purple box there are 2 white, 8 black, and 5 yellow markers while in an orange box there are 4 white, 6 black, and 7 yellow markers. One marker is ...
35 defective headphones got packed with 105 non-defective headphones. A customer randomly chooses one headphone. Find the probability that it is defective.
A box contains 13 black and 13 white balls. The probability of drawing two balls of the same colour is?
A bag contains 8 blue balls, 7 green balls and 5 yellow balls. Three balls are drawn at random. Find the probability that at least two balls are green.
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...
In a lottery, there are 4 prizes and 20 blanks. A lottery is drawn at random. What is the probability of getting a prize?
