| 51439 | There are 9 balls in a jar: 3 red, 2 blue and… | Medium | |
| 51499 | Three cannons are firing at a target | Medium | |
| 51525 | If an integer n is to be selected at random from 1… | Medium | |
| 51542 | If there are 30 red and blue marbles in a jar, and… | Medium | |
| 51601 | A jar contains only red, yellow, and orange marbles | Medium | |
| 51652 | A certain team has 9 members, including Joey | Medium | |
| 51766 | Amy has two decks of 55 cards each: Deck 1 and Deck… | Medium | |
| 51928 | Jake remembers only the last three letters of his four-letter Klingon name | Medium | |
| 52035 | If a coin is tossed 5 times what is the probability that… | Medium | |
| 52067 | In a deck of cards there are 52 cards numbered from 1… | Medium | |
| 52107 | A bag contains 6red, 5blue and 2green balls | Medium | |
| 52179 | Out of 10 persons working on a project, 6 are graduates | Medium | |
| 52225 | Thurston wrote an important seven-digit phone number on a napkin, but the… | Medium | |
| 52234 | In a room filled with 7 people, 4 people have exactly 1… | Medium | |
| 52285 | A string of 30 light bulbs is wired in such a way… | Medium | |
| 52292 | Set S consists of integers {1,3,5,7} | Medium | |
| 52398 | The probability that A speaks truth is 15/23 and that of B… | Medium | |
| 52413 | A 6-meter long wire is cut into two pieces | Medium | |
| 52423 | There are 6 red shoes, 2 green shoes | Medium | |
| 52428 | A bag contains 12 red marbles | Medium | |
| 52451 | A bowl has only 4 apples and 4 bananas | Medium | |
| 52463 | Each factor of 290 is inscribed on its own plastic ball, and… | Medium | |
| 52469 | A bag contains 30 black balls and 20 white balls | Medium | |
| 52481 | Out of 16 students studying in a class, 7 are from Maharashtra… | Medium | |
| 52498 | A fair coin is tossed 11 times | Medium | |
| 52545 | A contest will consist of n questions, each of which is to… | Medium | |
| 52573 | There are 12 slate rocks, 17 pumice rocks, and 8 granite rocks… | Medium | |
| 52606 | Out of first 40 natural numbers, one number is selected at random | Medium | |
| 52697 | A certain roller coaster has 7 cars, and a passenger is equally… | Medium | |
| 52737 | Set A: {1, 3, 4, 6, 10, 12, 15} If three numbers… | Medium | |
| 52761 | There are 7 red shoes & 3 green shoes | Medium | |
| 52762 | A shipment of 230 smartphones contains 84 that are defective | Medium | |
| 52767 | A shipment of 250 smartphones contains 67 that are defective | Medium | |
| 52771 | There is a total of 100 marbles in a box, each of… | Medium | |
| 52982 | A certain team has 15 members, including Joey | Medium | |
| 53006 | Amy has two decks of 54 cards each: Deck 1 and Deck… | Medium | |
| 53020 | In a box of 12 pens, a total of 4 are defective | Medium | |
| 53144 | A certain board game has a row of squares numbered 1 to… | Medium | |
| 53155 | A class consists of 100 students, 20 of them are girls and… | Medium | |
| 53169 | In a throw of dice what is the probability of geƫng number… | Medium | |
| 53258 | The probability of rain showers in Barcelona on any given day is… | Medium | |
| 53260 | If a computer program generates three-digit odd numbers using the numbers 9… | Medium | |
| 53284 | A shipment of 8 television sets contains 2 black-and-white sets and 5… | Medium | |
| 53296 | During the break of a football match, the coach will make 3… | Medium | |
| 53411 | {-10, -6, -5, -4, -2.5, -1, 0, 2.5, 4, 6, 7, 10}… | Medium | |
| 53495 | In a certain lottery, the probability that a number between 12 and… | Medium | |
| 53514 | If A speaks the truth 60% of the times, B speaks the… | Medium | |
| 53586 | The probability that a convenience store has no iced tea is 50% | Medium | |
| 53587 | A searchlight on top of the watch-tower makes 3 revolutions per minute | Medium | |
| 53591 | A relay has a series of 5 circuits in a line | Medium | |