A box contains only three colors of balls- red, green and blue. What is the minimum number of balls that should be picked from the box to ensure that at...
20 rotten bananas are accidentally mixed with 134 good ones. It is not possible to just look at a banana and tell whether or not it is rotten. One banan...
24 pens are there in a box where 10 are red pens, ‘p’ are blue pens and remaining are black pens. If a pen is picked, the probability of getting blu...
A bag contains x white balls, (x + 4) black balls and (x + 8) yellow balls. If probability of getting a black ball is 1/12 more than that of getting a w...
In a container, there are (x + 4) red balls, ‘x’ blue balls, and (x + 5) black balls. If the probability of picking two blue balls at random is (1/3...
A bag contains 5 red balls, 6 blue balls, and 9 green balls. Two balls are drawn at random without replacement. What is the probability that both balls ...
- There are black and white marbles in a jar in the ratio 4:5. After 20 marbles of each type are added, the ratio becomes 6:7. Find the original number of wh...
If a coin is tossed 10 times then what is the probability of getting three heads?
Ajith engages in a game where he simultaneously tosses three coins and rolls a pair of dice. To win, he must achieve two outcomes: all three coins must ...
What is the probability that a number selected from 1,2,3.......................68,69,70, is perfect square or a perfect cube?
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