Advertisements
Advertisements
प्रश्न
A number is chosen at random from the number –3, –2, –1, 0, 1, 2, 3. What will be the probability that square of this number is less then or equal to 1?
उत्तर
S = {−3, −2, −1, 0, 1, 2, 3}
Let E be the event of getting a number whose square is less than or equal to 1.
So, E = {−1, 1, 0}
\[P\left( E \right) = \frac{3}{7}\]
Hence, the probability of getting a number whose square is less than or equal to is \[\frac{3}{7}\]
APPEARS IN
संबंधित प्रश्न
There are three boys and two girls. A committee of two is to be formed. Find the probability of events that the committee contains :
a) At least one girl.
b) One boy and one girl
c) Only boys
In the given figure, a square dart board is shown. The length of a side of the larger square is 1.5 times the length of a side of the smaller square. If a dart is thrown and lands on the larger square. What is the probability that it will land in the interior of the smaller square?
The probability of getting an even number, when a die is thrown once, is :
(A) `1/2`
(B)`1/3`
(C)`1/6`
(D)`5/6`
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 the probability that the digit is a multiple of 3 is
A card is accidently dropped from a pack of 52 playing cards. The probability that it is an ace is
Which of the following cannot be the probability of occurence of an event?
A box contains 25 cards numbered from 1 to 25. A card is drawn at random from the bag. Find the probability that the number on the drawn card is a prime number.
A bag contains 18 balls out of which x balls are red. If two more red balls are put in the bag, the probability of drawing a red ball will be `9/8` times the probability of drawing a red ball in the first case. Find the value of x.
What is the probability that an ordinary year has 53 Mondays?
All kings, queens and aces are removed from a pack of 52 cards. The remaining cards are well-shuffled and then a card is drawn from it. Find the probability that the drawn card is a red card.
By using two variables, write the following statement in mathematical form:
The cost of two tables and five chairs is 2,200.
In a single throw of a die, find the probability of getting a number
(i) greater than 2
(ii) less than or equal to 2
(iii) not greater than 2.
Two coins are tossed together. Find the probability of getting: exactly one tail
I toss three coins together. The possible outcomes are no heads, 1 head, 2 heads and 3 heads. So, I say that probability of no heads is `1/4`. What is wrong with this conclusion?
A coin is tossed 12 times and the outcomes are observed as shown below:
The chance of occurrence of Head is
Total number of outcomes, when a ball is drawn from a bag which contains 3 red, 5 black and 4 blue balls is ______.
An experiment whose outcomes cannot be predicted exactly in advance is called a ______ experiment.
Ritwik draws a ball from a bag that contains white and yellow balls. The probability of choosing a white ball is `2/9`. If the total number of balls in the bag is 36, find the number of yellow balls.
A bag contains 25 cards, numbered through 1 to 25. A card is drawn at random. What is the probability that the number on the card drawn is a prime number?
