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F lives on an odd numbered floor but does not live on the 3rd floor. G lives immediately below F. More than two persons live between G and the vacant floor. Case 3 cannot fulfil the condition due to this case 3 dropped.
A box holds a total of 'p' purple balls and 5 silver balls. Two balls are drawn sequentially without replacement. The probability that both selected bal...
Probability of getting one Pink marble from a bag full of marbles is 3/13 and Yellow marbles in the bag are 6. If Blue marbles are 40% less than the Gre...
A bag contains (x + 7) small toys, (x + 12) medium toys, and (x + 17) large toys. The probability of drawing a large toy from the bag is (4/9). Find the...
Which of the following cannot be the probability of an event?
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?
...Out of three girls and five boys, five children are to be randomly selected for a dance programme. What is the probability that all the selected childre...
A bag holds 12 pink balls and 13 white balls. If two balls are randomly drawn from the bag, what is the probability that the two balls are of different ...
A bag contains 9 blue balls, 16 red balls, and 20 green balls. One ball is drawn at random. Find the probability that the ball drawn is either blue or g...
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...
A bag contains 20 white and some black balls. If the probability of drawing a black ball from the bag is 6.25 times that of drawing a white ball,...