| 68565 | Kyle, Devon, and Catherine each try independently to solve a problem | Medium | |
| 68606 | There are 6 red balls,8 blue balls and 7 green balls in… | Medium | |
| 68630 | A canoe has two oars, left and right | Medium | |
| 68677 | A classroom has 3 electric lamps | Medium | |
| 68805 | If x^2 – 13x + 40 = q, and x is a… | Medium | |
| 68822 | The center of a circle lies on the origin of the coordinate… | Medium | |
| 68866 | John has on his shelf four books of poetry, three novels, and… | Medium | |
| 68896 | Two unbiased coins are tossed.What is the probability of getting at most… | Medium | |
| 68914 | In packing for a trip, Sarah puts three pairs of socks -… | Medium | |
| 68986 | A password for a computer uses four digits from 0 to 9… | Medium | |
| 69018 | A toy store sells small, medium, and large toy trucks in each… | Medium | |
| 69029 | If a card is randomly drawn from a well shuffled pack of… | Medium | |
| 69043 | A cylinder has a base with a circumference of 20pi meters and… | Medium | |
| 69125 | There are 10 books on a shelf: 5 English books, 5 Spanish… | Medium | |
| 69142 | A password of a computer consists of nine digits 1 through 7 | Medium | |
| 69187 | A box contains 20 electric bulbs, out of which 4 are defective | Medium | |
| 69259 | In a bag there are a certain number of yellow balls and… | Medium | |
| 69287 | Into a dark room there are 16 beverage bottles: 12 of them… | Medium | |
| 69495 | From a Nine-member dance group, four will be chosen at random to… | Medium | |
| 69582 | In a simultaneous throw of two dice, what is the probability of… | Medium | |
| 69596 | A password for a computer uses six digits from 0 to 9… | Medium | |
| 69617 | An urn contains 5 red, 6 blue and 8 green balls | Medium | |
| 69629 | If 4 people are selected from a group of 6 married couples… | Medium | |
| 69657 | There are 5 marbles in a bag - 2 are orange and… | Medium | |
| 69686 | Peter rolls three dice at the same time | Medium | |
| 69689 | From a pack of 52 cards, 1 card is drawn at random | Medium | |
| 69697 | If two dies are thrown simultaneously what is the prob | Medium | |
| 69750 | Each of six different locks has a matching key | Medium | |
| 69786 | A bag contains 3 red, 5 yellow and 4 green balls | Medium | |
| 69813 | Two dice are rolled together | Medium | |
| 69859 | In a drawer of shirts 8 are blue, 6 are green and… | Medium | |
| 69864 | A fair coin is to be tossed twice and an integer is… | Medium | |
| 69879 | A certain deck of cards contains 2 blue cards, 2 red cards… | Medium | |
| 69898 | Given two fair dice, what is the probability E that the sum… | Medium | |
| 69929 | Let S be the set of permutations of the sequence 2, 3… | Medium | |
| 69946 | If an integer n is to be selected at random from 1… | Medium | |
| 69947 | A number n is chosen from {2, 4, 6 … 48} | Medium | |
| 69952 | A fair silver coin with sides marked heads and tails is to… | Medium | |
| 69969 | A four-digit code can consist of the digits 0 ~ 9 except… | Medium | |
| 69985 | Three unbased coins are tossed | Medium | |
| 69987 | What is the probability of randomly selecting one of the shortest diagonals… | Medium | |
| 70047 | Out of 11 persons working on a project, 4 are graduates | Medium | |
| 70060 | If a certain coin is flipped, the probability that the coin will… | Medium | |
| 70081 | On seven consecutive flips of a coin, what is the probability that… | Medium | |
| 70127 | There is a 50% chance Jen will visit Chile this year, while… | Medium | |
| 70145 | On the shelf, there are four books of poetry, four novels, and… | Medium | |
| 70172 | Two 6 faced dice are thrown together | Medium | |
| 70189 | The maitre 'd at an expensive Manhattan restaurant has noticed that 60%… | Medium | |
| 70198 | A toy store sells small, medium, large, and super-large toy trucks in… | Medium | |
| 70204 | Given a spinner with four sections of equal size labeled Q, B… | Medium | |