Advertisements
Advertisements
Question
In a lottery there are 10 prizes and 25 blanks. What is the probability of getting a prize?
Solution
Total no. of possible outcomes = 35 {10 prizes, 25 blanks}
⟶ event of getting prize
No. of favourable outcomes = 10 {10 prizes}
Probability, P(E) =`"No.of favorable outcomes"/"Total no.of possible outcomes"`=10/35 =2/7
APPEARS IN
RELATED QUESTIONS
The sum of the probabilities of all the elementary events of an experiment is _________.
In a simultaneous throw of a pair of dice, find the probability of getting an even number on one and a multiple of 3 on the other
A and B throw a pair of dice. If A throws 9, find B’s chance of throwing a higher number.
A bag contains 6 red, 8 black and 4 white balls. A ball is drawn at random. What is the probability that ball drawn is not black?
If the probability of winning a game is 0.3, what is the probability of losing it?
From a well-shuffled deck of 52 playing-cards, one card is drawn. Find the probability that the card drawn will be a face card of red colour.
A bag contains 100 identical marble stones which are numbered 1 to 100. If one stone is drawn at random from the bag, find the probability that it bears a number divisible by 4.
One ticket is drawn at random from a bag containing tickets numbered 1 to 40. The probability that the selected ticket has a number which is a multiple of 5 is ______.
In a lucky draw, there are 5 gifts and 25 blanks. The probability of getting a gift is ______.
An unbiased coin is tossed twice. Find the probability of getting at most one head.