Advertisements
Advertisements
प्रश्न
One card is drawn from a well-shuffled deck of 52 cards. Find the probability of getting a black face card.
उत्तर
Total possible outcomes = 52
Number of black cards = 26
Number of black face cards = 6
Number of favorable outcomes = 6
P(black face card) = `6/52 = 3/26`
APPEARS IN
संबंधित प्रश्न
A bag contains 5 white balls, 6 red balls and 9 green balls. A ball is drawn at random from the bag. Find the probability that the ball drawn is
- a green ball.
- a white or a red ball.
- neither a green ball nor a white ball.
A dice is thrown once. Find the probability of getting a number greater than 6.
A man tosses two different coins (one of Rs 2 and another of Rs 5) simultaneously. What is the probability that he gets at least one head?
A bag contains 10 red balls, 16 white balls and 8 green balls. A ball is drawn out of the bag at random. What is the probability that the ball drawn will be neither red nor green?
The percentage of marks obtained by a student in monthly unit tests are given below :
| Unit Test | l | ll | lll | lV | V | Vl |
| Percentage of marks obtained | 72 | 67 | 69 | 74 | 71 | 76 |
Based on this data find the probability that the student gets
(i) More than 70% marks in a unit test.
The percentage of marks obtained by a student in monthly unit tests are given below :
| Unit Test | l | ll | lll | lV | V | Vl |
| Percentage of marks obtained | 72 | 67 | 69 | 74 | 71 | 76 |
Based on this data find the probability that the student gets
(iii) less than 65% marks in a unit test.
The heights of 60 students of a class are given in the following table :
| Height(in cm) | 150-155 | 155-158 | 158-160 | 160-165 | 165-172 |
| No. of students | 8 | 20 | 25 | 4 | 3 |
Find the probability that the height of a student lies in the interval
(iii) 158-172
The heights of 60 students of a class are given in the following table :
| Height(in cm) | 150-155 | 155-158 | 158-160 | 160-165 | 165-172 |
| No. of students | 8 | 20 | 25 | 4 | 3 |
Find the probability that the height of a student lies in the interval
(ii) 150-160
An unbiased cubic die is thrown .Find the probability of getting
(iii) a number divisible by 2
Two different dice are thrown at the same time. Find the probability of getting :
(ii)sum divisible by 5
