हिंदी

A Die is Thrown Once. the Probability of Getting a Prime Number is - Mathematics

Advertisements
Advertisements

प्रश्न

A die is thrown once. The probability of getting a prime number is 

विकल्प

  • \[\frac{2}{3}\]

  • \[\frac{1}{3}\]

  • \[\frac{1}{2}\]

  • \[\frac{1}{6}\]

MCQ

उत्तर

In a single throw of a die, the possible outcomes are 1, 2, 3, 4, 5 and 6.
∴ Total number of outcomes = 6
The favourable outcomes are 2, 3 and 5.
So, the number of favourable outcomes are 3.
∴ P(getting a prime number) =\[\frac{\text{ Favourable number of outcomes }}{\text{ Total number of outcomes }} = \frac{3}{6} = \frac{1}{2}\] 

 

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 16: Probability - Exercise 16.4 [पृष्ठ ३७]

APPEARS IN

आरडी शर्मा Mathematics [English] Class 10
अध्याय 16 Probability
Exercise 16.4 | Q 21 | पृष्ठ ३७

संबंधित प्रश्न

In a single throw of a pair of different dice, what is the probability of getting (i) a prime number on each dice?


A box consists of 100 shirts of which 88 are good, 8 have minor defects and 4 have major defects. Ramesh, a shopkeeper will buy only those shirts which are good but 'Kewal' another shopkeeper will not buy shirts with major defects. A shirt is taken out of the box at random. What is the probability that

(i) Ramesh will buy the selected shirt?

(ii) 'Kewal' will buy the selected shirt?


All red face cards are removed from a pack of playing cards. The remaining cards were well shuffled and then a card is drawn at random from them. Find the probability that the drawn card is

(i) a red card

(ii) a face card

(iii) a card of clubs


A target shown in Fig. below consists of three concentric circles of radii, 3, 7 and 9 cm
respectively. A dart is thrown and lands on the target. What is the probability that the dart will land on the shaded region?


A bag contains cards numbered from 1 to 25. A card is drawn at random from the bag. The probability that the number on this card is divisible by both 2 and 3 is

(A)`1/5`

(B)`3/25`

(C)`4/25`

(D)`2/25`


A box contains 80 discs which are numbered from 1 to 80. If one disc is drawn at random from the box, find the probability that it bears a perfect square number.


A bag contains cards numbered from 1 to 49. A card is drawn from the bag at random, after mixing the card thoroughly. Find the probability that the number on the drawn card is an odd number 


All jacks, queens and kings 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 red 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 square.  


A die is thrown once. What is the probability of getting a number greater than 4?
 


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 neither red nor green.


Two different dice are tossed together. Find the probability that the number on each die is even.


A box contains a certain number of balls. On each of 60% balls, letter A is marked. On each of 30% balls, letter B is marked and on each of remaining balls, letter C is marked. A ball is drawn from the box at random. Find the probability that the ball drawn is:

  1. marked C
  2. A or B
  3. neither B nor C

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.


In a certain race, there are three boys X,Y, Z. The winning probability of X is twice than Y and the winning probability of Y is twice than Z. If P(X) + P(Y) + P(Z) = 1, then find the winning probability of each girl.


A coin is tossed twice. Find the probability of getting: exactly one head


A letter is chosen from the word ‘PENCIL’ what is the probability that the letter chosen is a consonant?


From 10 identical cards, numbered 1, 2, 3, ……, 10, one card is drawn at random. Find the probability that the number on the card drawn is a multiple of

3


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: 12


Three coins are tossed simultaneously. What is the probability of getting at least one head?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×