Advertisements
Advertisements
प्रश्न
All kings, queens and aces are removed from a pack of 52 cards. The remaining cards are well-shuffled and then a card is drawn from it. Find the probability that the drawn card is a black face card.
उत्तर
There are 4 kings, 4 queens and 4 aces. These are removed.
Thus, remaining number of cards = 52 − 4 − 4 − 4 = 40.
Number of black face cards now = 2 (only black jacks).
∴ P(getting a black face card) =`("Number of favourable outcomes")/"Number of all possible outcomes"`
Thus, the probability that the drawn card is a black face card is `1/20`.
APPEARS IN
संबंधित प्रश्न
Two digit numbers are formed using the digits 0, 1, 2, 3, 4, 5 where digits are not repeated.
P is the event that the number so formed is even.
Q is the event that the number so formed is greater than 50.
R is the event that the number so formed is divisible by 3.
Then write the sample space S and events P, Q, R using set notation.
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 perfect square number.
Two different dice are rolled simultaneously. Find the probability that the sum of numbers appearing on the two dice is 10 ?
Two dice are thrown together. The probability of getting the same number on both dice is.
Joseph kept 26 cards in a cap, bearing one English alphabet on each card. One card is drawn at random. What is the probability that the card drawn is a vowel card ?
Five cards − the ten, jack, queen, king and ace of diamonds, are well-shuffled with their face downwards. One card is then picked up at random.
What is the probability that the card is the queen?
The king, queen and jack of clubs are removed form a deck of 52 playing cards and the remaining cards are shuffled. A card is drawn from the remaining cards. Find the probability of getting a card of a face card
A die is thrown once. What is the probability of getting an odd number?
If three coins are tossed simultaneously, then the probability of getting at least two heads, is
The probability of throwing a number greater than 2 with a fair dice is
A number is selected at random from the numbers 1 to 30. The probability that it is a prime number is
If a two digit number is chosen at random, then the probability that the number chosen is a multiple of 3, is
A bag contains 4 white balls, 5 red balls, 2 black balls and 4 green balls. A ball is drawn at random from the bag. Find the probability that it is not green.
All kings, queens and aces are removed from a pack of 52 cards. The remaining cards are well-shuffled and then a card is drawn from it. Find the probability that the drawn card is a red card.
A balloon vendor has 2 red, 3 blue and 4 green balloons. He wants to choose one of them at random to give it to Pranali. What is the probability of the event that Pranali gets, a blue balloon
A balloon vendor has 2 red, 3 blue and 4 green balloons. He wants to choose one of them at random to give it to Pranali. What is the probability of the event that Pranali gets,a green balloon.
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: less than 12
What is the probability of throwing an even number with a single standard dice of six faces?
The probability of getting less than 3 in a single throw of a die is ____________.
