Advertisements
Advertisements
प्रश्न
A box contains 5 red marbles, 8 white marbles and 4 green marbles. One marble is taken out of the box at randam.What is the probability that the marble taken out wil be not green?
उत्तर
Total number of marbles = 5 + 8 + 4 = 17
Number of green marbles = 4
Probability of getting a green marble = `" Number of favourable outcomes "/"Total number of outcomes "` = `4/17`
Probability of not getting a green marble = `1-4/17 = 13/17`
APPEARS IN
संबंधित प्रश्न
Find the class mark of the classes 20-30 and 30-40.
A number is selected at random from the numbers 1 to 30. The probability that it is a prime number is:
(A) 2/3
(B) 1/6
(C) 1/3
(D) 11/30
Three distinct coins are tossed together. Find the probability of getting
(i) at least 2 heads
(ii) at most 2 heads
Find the class mark of the class 35 - 39.
Three different coins are tossed together. Find the probability of getting at least two heads.
A card is drawn at random from a well-shuffled deck of playing cards. Find the probability that the card drawn is neither a jack nor a king.
In below Fig., points A, B, C and D are the centers of four circles that each have a radius of length one unit. If a point is selected at random from the interior of square ABCD. What is the probability that the point will be chosen from the shaded region?
Cards numbered from 11 to 60 are kept in a box. If a card is drawn at random from the box, find the probability that the number on the drawn card is divisible by 5
All the red face cards are removed from a pack of 52 playing cards. A card is drawn at random from the remaining cards, after reshuffling them. Find the probability that the drawn card is a queen.
In fig. 7 is shown a disc on which a player spins an arrow twice. The fraction `a/b` is formed, where 'a' is the number of sector on which arrow stops on the first spin and 'b' is the number of the sector in which the arrow stops on second spin. On each spin, each sector has equal chance of selection by the arrow. Find the probability that the fraction `a/b>1.`
A card is drawn at random from a well shuffled pack of 52 playing cards. Find the probability that the drawn card is neither a king nor a queen ?
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?
A box contains 5 red, 8 blue and 3 green pens. Rutuja wants to pick a pen at random. What is the probability that the pen is blue?
A bag contains 5 white and 7 red balls. One ball is drawn at random. What is the probability that ball drawn is not black?
A bag contains 3 red balls and 5 black balls. A ball is draw at random from the bag. What is the probability that the ball drawn is not red?
A box contains cards numbered 3, 5, 7, 9, ..., 35, 37. A card is drawn at random form the box. Find the probability that the number on the drawn card is a prime number.
A group consists of 12 persons, of which 3 are extremely patient, other 6 are extremely honest and rest are extremely kind. A person form 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 extremely kind or honest. Which of the above you prefer more.
A piggy bank contains hundred 50 paise coins, fifity ₹1 coins, twenty ₹2 coins and ten ₹5 coins. If it is equally likely that one of the coins will fall out when the bank is turned upside down, find the probability that the coin which fell will be a ₹1 or ₹2 coin
A box contains 20 cards numbered from 1 to 20. A card is drawn at random from the box. Find the probability that the number on the drawn card is a prime number
A black die and a white die are thrown at the same time. Write all the possible outcomes. What is the probability? that the product of numbers appearing on the top of the dice is less than 9.
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 colour
If \[\bar{E}\] denote the complement or negation of an even E, what is the value of P(E) + P(\[\bar{E}\]) ?
The probability of throwing a number greater than 2 with a fair dice is
Aarushi sold 100 lottery tickets in which 5 tickets carry prizes. If Priya purchased a ticket, what is the probability of Priya winning a prize?
A die is thrown once. The probability of getting a prime number is
A number is selected at random from the numbers 1 to 30. The probability that it is a prime number is
What is the probability that a leap year has 52 Mondays?
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 two digit number is to be formed using the digits 0, 1, 2, 3. Repetition of the digits is allowed. Find the probability that a number so formed is a prime number.
A piggy bank contains hundred 50 p coins, seventy ₹1 coin, fifty ₹2 coins and thirty ₹5 coins. If it is equally likely that one of the coins will fall out when the bank is turned upside down, what is the probability that the coin will be a 50 p or a ₹2 coin?
A bag contains 18 balls out of which x balls are red. If the ball is drawn at random from the bag, what is the probability that it is not red?
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 black face card.
A die is thrown once. The probability of getting an odd number greater than 3 is
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 blue balloon
A die is thrown, find the probability of getting:
a number not greater than 4.
Three identical coins are tossed together. What is the probability of obtaining:
exactly two heads?
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
A die is thrown once. Find the probability of getting:
a number less than 6
A die is thrown once. Find the probability of getting:
a number greater than 6.
In a football match, a goalkeeper of a team can stop the goal, 32 times out of 40 attempts tried by a team. Find the probability that the opponent team can convert the attempt into a goal
What is the probability that the spinner will not land on a multiple of 3?
Each outcome or a collection of outcomes in an experiment makes an ______.
An experiment whose outcomes cannot be predicted exactly in advance is called a ______ experiment.
A dice is rolled once. What is the probability that the number on top will be odd
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.
Sonia picks up a card from the given cards.
Calculate the probability of getting a Y card
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?
