Advertisements
Advertisements
प्रश्न
Which of the following cannot be the probability of an event?
पर्याय
\[\frac{2}{3}\]
\[- 1 . 5\]
\[15 %\]
\[0 . 7\]
उत्तर
4 options of probability of some events
TO FIND: Which of the given options cannot be the probability of an event?
We know that
. `0≤p≤1`
As the probability of an event cannot be negative
In option (b) P=-1.5
APPEARS IN
संबंधित प्रश्न
In a certain race, there are three boys A, B, C. The winning probability of A is twice than B and the winning probability of B is twice than C. If P(A) + P(B) + P(C) = 1, then find the probability of win for each boy.
A Group consists of 12 persons, of which 3 are extremely patient, other 6 are extremely honest and rest are extremely kind. A person from the group is selected at random. Assuming that each person is equally likely to be selected, find the probability of selecting a person who is (i) extremely patient (ii) extremely kind or honest.
Which of the above values you prefer more?
The probability of getting an even number, when a die is thrown once, is :
Which number cannot represent a probability?
In a class of 42 students in Model High School, 3 students use spectacles.
Fill in the following boxes to find the probability of a students selected
at random is wearing sepctacles.
The total number of students in the class is 42.
∴n(S) = ...... ,
Let the event, a student uses spectacles, be A.
∴ n(A) = ...........
∴ P(A) = ............ ∴ P(A) = ............
A box contains 5 red marbles, 8 white marbles, and 4 green marbles, One marble is taken out of the box at random. What is the probability that the marble taken out will be red?
A bag contains 3 red and 5 black balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is not red.
A bag contains three green marbles, four blue marbles, and two orange marbles, If a marble is picked at random, then the probability that it is not an orange marble is
If a number x is chosen from the numbers 1, 2, 3, and a number y is selected from the numbers 1, 4, 9. Then, P(xy < 9)
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 black.
Two dice are rolled together. Find the probability of getting such numbers on the two dice whose product is 12.
Cards numbered 1 to 30 are put in a bag. A card is drawn at random from the bag. Find the probability that the number on the drawn card is a prime number greater than 7.
Three coins are tossed simultaneously. What is the probability of getting exactly two heads?
A game consists of tossing a coin 3 times and noting the outcome each time. If getting the result in the tosses is a success, find the probability of losing the game.
In a certain race there are three boys A, B, C. The winning probability of A is twice than B and the winning probability of B is twice than C. If P(A) + P(B) + P(C) = 1, then find the probabilities of their winning.
By using two variables, write the following statement in mathematical form:
The cost of two tables and five chairs is 2,200.
A die is thrown once. Find the probability of getting.
(a) a prime number.
(b) an odd number
Three identical coins are tossed together. What is the probability of obtaining:
exactly two heads?
An event is very unlikely to happen. Its probability is closest to ______.
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?