Advertisements
Advertisements
प्रश्न
A die is rolled, then the probability that a number 1 or 6 may appear is
विकल्प
2/3
5/6
1/3
1/2
उत्तर
1/3
Total number of sample space, S = {1, 2, 3, 4, 5, 6}
∴ n(S) = 6
Let A be the event of getting the number 1 or 6.
A = {1, 6}
i.e. n(A) = 2
Hence, required probability = \[\frac{n\left( A \right)}{n\left( S \right)} = \frac{2}{6} = \frac{1}{3}\]
APPEARS IN
संबंधित प्रश्न
Describe the sample space for the indicated experiment: A die is thrown two times.
Describe the sample space for the indicated experiment: A coin is tossed four times.
Describe the sample space for the indicated experiment: A coin is tossed and a die is thrown.
A coin is tossed once. Write its sample space
If a coin is tossed three times (or three coins are tossed together), then describe the sample space for this experiment.
A coin is tossed and then a die is thrown. Describe the sample space for this experiment.
A coin is tossed and then a die is rolled only in case a head is shown on the coin. Describe the sample space for this experiment.
A bag contains 4 identical red balls and 3 identical black balls. The experiment consists of drawing one ball, then putting it into the bag and again drawing a ball. What are the possible outcomes of the experiment?
A die is thrown repeatedly until a six comes up. What is the sample space for this experiment.
List all events associated with the random experiment of tossing of two coins. How many of them are elementary events.
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is black and a king
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is neither a heart nor a king
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is not a diamond card
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is a black card
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is not an ace
A bag contains 6 red, 4 white and 8 blue balls. if three balls are drawn at random, find the probability that one is red, one is white and one is blue.
Five cards are drawn from a pack of 52 cards. What is the chance that these 5 will contain at least one ace?
The face cards are removed from a full pack. Out of the remaining 40 cards, 4 are drawn at random. what is the probability that they belong to different suits?
20 cards are numbered from 1 to 20. One card is drawn at random. What is the probability that the number on the cards is a multiple of 4?
20 cards are numbered from 1 to 20. One card is drawn at random. What is the probability that the number on the cards is not a multiple of 4?
A class consists of 10 boys and 8 girls. Three students are selected at random. What is the probability that the selected group has all boys?
A bag contains tickets numbered from 1 to 20. Two tickets are drawn. Find the probability that both the tickets have prime numbers on them
An urn contains 7 white, 5 black and 3 red balls. Two balls are drawn at random. Find the probability that one ball is red and the other is black
A sample space consists of 9 elementary events E1, E2, E3, ..., E9 whose probabilities are
P(E1) = P(E2) = 0.08, P(E3) = P(E4) = P(E5) = 0.1, P(E6) = P(E7) = 0.2, P(E8) = P(E9) = 0.07
Suppose A = {E1, E5, E8}, B = {E2, E5, E8, E9}
Using the addition law of probability, find P(A ∪ B).
A single letter is selected at random from the word 'PROBABILITY'. What is the probability that it is a vowel?
Two dice are thrown together. The probability that at least one will show its digit greater than 3 is
A card is drawn at random from a pack of 100 cards numbered 1 to 100. The probability of drawing a number which is a square is
The probabilities of happening of two events A and B are 0.25 and 0.50 respectively. If the probability of happening of A and B together is 0.14, then probability that neither Anor B happens is
If the probability for A to fail in an examination is 0.2 and that for B is 0.3, then the probability that either A or B fails is
How many two-digit positive integers are multiples of 3?
A typical PIN (personal identification number) is a sequence of any four symbols chosen from the 26 letters in the alphabet and the ten digits. If all PINs are equally likely, what is the probability that a randomly chosen PIN contains a repeated symbol?
The probability that a randomly chosen 2 × 2 matrix with all the entries from the set of first 10 primes, is singular, is equal to ______.
Two boxes are containing 20 balls each and each ball is either black or white. The total number of black ball in the two boxes is different from the total number of white balls. One ball is drawn at random from each box and the probability that both are white is 0.21 and the probability that both are black is k, then `(100"k")/13` is equal to ______.
Five horses are in a race. Mr. A selects two of the horses at random and bets on them. The probability that Mr. A selected the winning horse is ______.
