Advertisements
Advertisements
प्रश्न
From a well-shuffled deck of 52 cards, one card is drawn at random. What is the probability of getting a queen?
विकल्प
`1/13`
`1/26`
`4/39`
none of these
उत्तर
`1/13`
Explanation:
Total number of all possible outcomes= 52
Number of queens = 4
∴ P( getting a queen) = `4/52 = 1/13`
APPEARS IN
संबंधित प्रश्न
The probability that a number selected at random from the numbers 1, 2, 3, ..., 15 is a multiple of 4, is
`(A)4/15`
`(B)2/15`
`(C)1/5`
`(D)1/3`
Cards numbered from 11 to 60 are kept in a box. If a card is drawn at random from the box, find the probability that the number on the drawn card is an odd number.
Cards numbered from 11 to 60 are kept in a box. If a card is drawn at random from the box, find the probability that the number on the drawn card is a prime number less than 20.
Cards bearing numbers 2, 3, 4, ..., 11 are kept in a bag. A card is drawn at random from the bag. The probability of getting a card with a prime number is
A group consists of 12 persons, of which 3 are extremely patient, other 6 are extremely honest and rest are extremely kind. A person form the group is selected at random. Assuming that each person is equally likely to be selected, find the probability of selecting a person who is extremely patient
A dice is rolled twice. Find the probability that 5 will come up exactly one time
Cards numbered from 11 to 60 are kept in a box. If a card is drawn at random from the box, find the probability that the number on the drawn card is divisible by 5
All kings and queens are removed from a pack of 52 cards. The remaining cards are well shuffled and then a card is randomly drawn from it. Find the probability that this card is a black card.
In a bag there are 44 identical cards with figure of circle or square on them. There are 24 circles, of which 9 are blue and rest are green and 20 squares of which 11 are blue and rest are green. One card is drawn from the bag at random. Find the probability that it has the figure of green colour
One card is drawn at random from a well shuffled deck of 52 cards. What is the probability of getting an ace?
In a family of 3 children, the probability of having at least one boy is
Two dice are thrown together. The probability of getting the same number on the both dice is
A bag contains 8 red, 2 black and 5 white balls. One ball is drawn at random. What is the probability that the ball drawn is not black?
Three identical coins are tossed together. What is the probability of obtaining:
exactly two heads?
A die is thrown once. Find the probability of getting:
a number other than 3 and 5
Two dice are thrown at the same time. Find the probability that the sum of the two numbers appearing on the top of the dice is: 0
A dice is rolled once. What is the probability that the number on top will be greater than 5
A dice is rolled once. What is the probability that the number on top will be a factor of 6
A card is drawn at random from a pack of well shuffled 52 playing cards. Complete the following activity to find the probability that the card drawn is:
Event A: The card drawn is an ace.
Event B: The card drawn is a spade.
Activity: 'S' is the sample space.
∴ n(S) = 52
Event A: The card drawn is an ace.
∴ n(A) = `square`
P(A) = `square` ......(formula)
∴ P(A) = `square/52`
∴ P(A) = `square/13`
Event B: The card drawn is a spade.
∴ n(B) = `square`
P(B) = `(n(B))/(n(S))`
∴ P(B) = `square/4`
A bag contains 25 cards, numbered through 1 to 25. A card is drawn at random. What is the probability that the number on the card drawn is a perfect square?
