What is the probability that a person born between the years 1990 and 2010, inclusive, was born in a leap year?
From a set of consecutive numbers from 1 to 20 (both inclusive) a number is selected. What is the probability that the selected number is divisible by 5?
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An unbiased die is rolled once. What is the probability of getting a prime number?
A bag contains 7 different black and 5 different white balls. If one ball is selected at random find the probability that the ball drawn is white.
Two dice, one colored white and the other colored yellow, are rolled simultaneously. What is the probability of getting a sum greater than or equal to 10?
There are 10 houses in the neighborhood, each equally likely to foreclose. One of these houses is adjacent to Sanchez' house. A recent study has shown that if an adjacent house forecloses, the value of a house drops by $10,000. If it is predicted that one house will foreclose each week, what is the probability that the value of Sanchez' house will drop by $10,000 this week?
A box contains 26 blocks, each listing a unique English alphabet. If 3 blocks are picked at a time, what is the probability that all of them are vowels?
4 coins are tossed. What is the probability of getting neither all heads nor all tails?
A dance group consists of 6 men and 7 women. There are 3 married couples in the group. If 2 people have to be selected – 1 man and 1 woman, what is the probability that one of the couples will be selected?
Two dice are rolled simultaneously. What is the probability of getting a sum greater than or equal to 10?
A team of 4 people is to be formed from a group of 4 girls and 4 boys. Find the probability that the team consists of at least one girl.
Two letters from the word FARTHING are selected at random. What is the probability that at least one of the selected letters is a consonant?
A Science test and an English test were administered to a class of 30 students. Half of the students passed in Science, 60% of the students passed in English and 10% failed in both. If a student is selected at random from the class, what is the probability that the student has passed in at least one of the two tests?
A bag contains 8 balls, of which 4 are white and the remaining are red. Three balls are selected from the bag at random without replacement. Find the probability that at least one of the three selected balls is red.
A card is drawn from a pack of cards, in which all the cards are equally likely to be drawn. Find the probability that the card drawn is not a face card.
There are 12 pens and 5 pencils in box A . An object is picked at random from box A and moved to box B , in which there are already 4 pens and 5 pencils. If one object is then to be picked from box B , what is the probability that a pen will be picked?
A and B are members of a group of 11 people. A team of 6 members is to be chosen from this group. What is the probability that A and B will either both be in the team or will both be out of the team?
Four persons enter a lift on the ground floor of an 8floor building(excluding the ground floor). Each person is equally likely to leave the lift on any floor except the ground floor. What is the probability of all the persons leaving the lift on different floors?
Three squares on a chessboard are chosen at random. The probability that 2 of them are of one color and the remaining one is of another color is:
Alex participates in a shooting competition and makes n attempts to shoot a target. Is the probability that he will shoot the target in all the n attempts that he makes, greater than 50%?
129 videos132 docs146 tests

129 videos132 docs146 tests
