Advertisements
Advertisements
प्रश्न
A dice is thrown once. Find the probability of getting a number less than 3.
उत्तर
In throwing a dice, total possible outcomes = {1, 2, 3, 4, 5, 6}
n(S) = 6
On a dice, number less than 3 = {1, 2}
n(E) = 2
Probability of getting a number less than 3
= `(n(E))/(n(S))`
= `2/6`
= `1/3`
APPEARS IN
संबंधित प्रश्न
A game of numbers has cards marked with 11, 12, 13, ....., 40. A card is drawn at random. Find the probability that the number on the card drawn is a perfect square.
Which of the following cannot be the probability of an event?
– 0.6
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?
One card is drawn from a well-shuffled deck of 52 cards. Find the probability of getting a queen of red color.
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
(ii) less than 72% 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
(ii) 150-160
An unbiased cubic die is thrown .Find the probability of getting
(ii) a number greater than 2
Two dice, one white and one red are rolled together .Find the probability of getting
(ii) two different digits
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 .
(ii) red 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?
