Advertisements
Advertisements
प्रश्न
From a well-shuffled deck of 52 playing-cards, one card is drawn. Find the probability that the card drawn will be a black card.
उत्तर
Total number of cards = 52
Total number of outcomes = P(s) = 52
There are 13 cards of each type. The cards of heart and diamond are red in colour. Spade and diamond are black. So, there are 26 red cards and 26 black cards.
Number of black cards in a deck = 26
P(E) = favourable outcomes for the event of drawing a black card = 26
Probability of drawing a black card = `(P(E))/(P(s)) = 26/52 = 1/2`
APPEARS IN
संबंधित प्रश्न
A die is thrown. Find the probability of getting a number greater than 5
A bag contains 5 red, 8 white and 7 black balls. A ball is drawn at random from the bag. Find the probability that the drawn ball is neither white nor black.
Find the probability that a number selected at random from the numbers 1, 2, 3, ..., 35 is a Prime number
A bag contains 6 red balls and some blue balls. If the probability of drawing a blue ball the bag is twice that of a red ball, find the number of blue balls in the bag.
A box contains loo red cards, 200 yellow cards and 50 blue cards. If a card is drawn at random from the box, then find the probability that it will be a blue card
Cards marked with numbers 1, 3, 5, ..., 101 are placed in a bag and mixed thoroughly. A card is drawn at random from the bag. Find the probability that the number on the drawn card is less than 19.
A game consists of spinning an arrow which comes to rest pointing at one of the regions (1, 2 or 3) (figure). Are the outcomes 1, 2 and 3 equally likely to occur? Give reasons.
Two dice are thrown together. Find the probability that the product of the numbers on the top of the dice is 7
A coin is tossed 3 times. List the possible outcomes. Find the probability of getting all heads
In a game, the entry fee is Rs 5. The game consists of a tossing a coin 3 times. If one or two heads show, Sweta gets her entry fee back. If she throws 3 heads, she receives double the entry fees. Otherwise she will lose. For tossing a coin three times, find the probability that she just gets her entry fee.
