Advertisements
Advertisements
प्रश्न
All the three face cards of spades are removed from a well-shuffled pack of 52 cards. A card is then drawn at random from the remaining pack. Find the probability of getting a black card.
उत्तर
Total number of cards = 52
3 face cards of spades are removed
Remaining cards = 52 – 3 = 49 = number of possible outcomes
n(S) = 49
Number of black cards left = 23 cards (13 club + 10 spades)
Event of drawing a black card = E = 23
n(E) = 23
Probability of drawing a black card = `(n(E))/(n(S)) = 23/49`
APPEARS IN
संबंधित प्रश्न
Sixteen cards are labelled as a, b, c, ............... m, n, o, p. They are put in a box and shuffled. A boy is asked to draw a card from the box. What is the probability that the card drawn is:
- a vowel.
- a consonant.
- none of the letters of the word median.
Cards marked with numbers 1, 2, 3, 4… 20 are well shuffled and a card is drawn at random. What is the probability that the number on the card is:
(1) A prime number,
(2) A number divisible by 3,
(3) A perfect square?
Which of the following cannot be the probability of an event?
0.35
A dice is thrown once. Find the probability of getting a number greater than 6.
A pair of dice is thrown. Find the probability of getting a sum of 10 or more, if 5 appears on the first dice.
A bag contains 16 coloured balls. Six are green, 7 are red and 3 are white. A ball is chosen, without looking into the bag. Find the probability that the ball chosen is green or red.
In a musical chairs game, a person has been advised to stop playing the music at any time within 40 seconds after its start. What is the probability that the music will stop within the first 15 seconds?
A bag contains a red ball , a blue ball and a yellow ball , all the balls being of the same size . Anjali takes out a ball from the bag without looking into it . what is the probability that she takes out .
(i) Yellow ball?
A bag contains a red ball , a blue ball and a yellow ball , all the balls being of the same size . Anjali takes out a ball from the bag without looking into it . what is the probability that she takes out .
(iii) blue ball?
A card is drawn from a well shuffled deck of cards. What is the probability that the card drawn is neither a king nor a queen?
