Advertisements
Advertisements
Question
An urn contains 10 red and 8 white balls. One ball is drawn at random. Find the probability
that the ball drawn is white.
Solution
Total no of possible outcomes = 18 {10 red balls, 8 white balls}
E ⟶ event of drawing white ball
No. of favourable outcomes = 8 {8 white balls}
Probability, P(E) =`"No.of favorable outcomes"/"Total no.of possible outcomes"`
=818 =4/9
APPEARS IN
RELATED QUESTIONS
In a simultaneous throw of a pair of dice, find the probability of getting 1 at least once
A box contains loo red cards, 200 yellow cards and 50 blue cards. If a card is drawn at random from the box, then find the probability that it will be a blue card
In a game of chance, a spinning arrow comes to rest at one of the numbers 1, 2, 3, 4, 5, 6, 7, 8. All these are equally likely outcomes. Find the probability that it will rest at a number greater than 2.
There are six cards in a box, each bearing a number from 0 to 5. Find the probability of the following event, that a card drawn show, a whole number.
If P(A) denotes the probability of an event A, then ______.
A school has five houses A, B, C, D and E. A class has 23 students, 4 from house A, 8 from house B, 5 from house C, 2 from house D and rest from house E. A single student is selected at random to be the class monitor. The probability that the selected student is not from A, B and C is ______.
Two dice are thrown together. Find the probability that the product of the numbers on the top of the dice is 6
A lot consists of 48 mobile phones of which 42 are good, 3 have only minor defects and 3 have major defects. Varnika will buy a phone if it is good but the trader will only buy a mobile if it has no major defect. One phone is selected at random from the lot. What is the probability that it is acceptable to Varnika?
A bag contains 24 balls of which x are red, 2x are white and 3x are blue. A ball is selected at random. What is the probability that it is not red?
An unbiased coin is tossed twice. Find the probability of getting exactly one tail.
