| 76920 | Set S consists of integers {2,3,4,5} | Medium | |
| 76962 | A coin is tossed until sequence HTH appears (H denotes the fall… | Medium | |
| 77031 | Lottery balls numbered consecutively from one through one hundred are placed in… | Medium | |
| 77078 | 45 girls and 60 boys are present at a party | Medium | |
| 77128 | Derek throws three dice in a special game | Medium | |
| 77164 | From a group of 3 boys and 3 girls, 4 children are… | Medium | |
| 77216 | Circles X and Y are concentric | Medium | |
| 77350 | If a 3-digit integer is selected at random from the integers 300… | Medium | |
| 77404 | If two numbers, a and b, are to be chosen from a… | Medium | |
| 77415 | Three boys are ages 4, 6 and 7 respectively | Medium | |
| 77444 | Two bags are randomly selected from a flight at the airport to… | Medium | |
| 77453 | 20 throws of a die produces following results SCORE -- NUMBER OF… | Medium | |
| 77488 | Set S consists of all prime integers less than 10 | Medium | |
| 77506 | A rectangular table seats 3 people on each of two sides, with… | Medium | |
| 77516 | An unbiased cubic die is thrown.What is the probability of getting a… | Medium | |
| 77521 | Nine people are on an elevator that stops at exactly 9 floors | Medium | |
| 77536 | In a certain random experiment, exactly one of the outcomes A, B… | Medium | |
| 77586 | For 6-digit integer 46x,y12, when x and y are drawn at random… | Medium | |
| 77596 | Four rooms of the same type were advertised to be let in… | Medium | |
| 77605 | A fair is coin is tossed repeatedly | Medium | |
| 77622 | If a jury of 12 people is to be selected randomly from… | Medium | |
| 77628 | In a contest, a bowl contains 20 keys, only one of which… | Medium | |
| 77661 | The probability is 1/2 that a certain coin turns up heads on… | Medium | |
| 77685 | In a certain game of dice, the player’s score is determined as… | Medium | |
| 77790 | The maitre 'd at an expensive Manhattan restaurant has noticed that 60%… | Medium | |
| 77827 | 5 cards have to be put into their 5 respective envelopes | Medium | |
| 77835 | A single letter is selected at random from the word 'PROBABILITY' | Medium | |
| 77866 | A box contains seven light out of which 3 are defective | Medium | |
| 77999 | Denise is trying to open a safe whose combination she does not… | Medium | |
| 78011 | A single letter is selected at random from the word 'PROPER' | Medium | |
| 78034 | There is a 50% chance that Alice will visit China this year… | Medium | |
| 78087 | If two letters are chosen at random (without replacement) from the word… | Medium | |
| 78117 | Circles X and Y are concentric | Medium | |
| 78119 | In a bag, there are seven 6-sided dice (numbered 1 to 6)… | Medium | |
| 78139 | A bag contains 10 black and 20 white balls | Medium | |
| 78167 | hree 6 faced dice are thrown together | Medium | |
| 78168 | Tanya prepared 4 different letters to be sent to 4 different addresses | Medium | |
| 78177 | Find the probability that the number drawn is a multiple of 6… | Medium | |
| 78210 | A student has to select 3 subject out of 6 subjects M,B,H,U,L | Medium | |
| 78236 | Given a spinner with four sections of equal size labeled T, B… | Medium | |
| 78263 | In a game, a person is declared winner, if he gets 4… | Medium | |
| 78333 | Y = {2, 3, 4, 5} B = {4, 5, 6, 7… | Medium | |
| 78365 | Two couples and one single person are seated at random in a… | Medium | |
| 78446 | A magician has five animals in his magic hat: 3 doves and… | Medium | |
| 78479 | Candy bars are on sale at the grocery, buy 3 get 1… | Medium | |
| 78523 | what is the probability of getting atmost one head when Two unbiased… | Medium | |
| 78530 | if 6 coins are tossed simultaneously what is the probability of getting… | Medium | |
| 78558 | Set #1 = {A, B, C, D, E, F} Set #2 =… | Medium | |
| 78582 | In a certain game of dice, the player’s score is determined as… | Medium | |
| 78598 | A box contains 2 black, 3 orange and 4 pink ribbons | Medium | |