Advertisements
Advertisements
Question
A bag contains tickets numbered 11, 12, 13,..., 30. A ticket is taken out from the bag at random. Find the probability that the number on the drawn ticket is a multiple of 7
Solution
Total no. of possible outcomes = 20 {11, 12, 13, ….., 30}
E ⟶ event of getting no. which is multiple of 7
No. of favorable outcomes = 3 {14, 21, 2}
Probability, P(E) =`"No.of favorable outcomes"/"Total no.of possible outcomes"`
P(E) = 3/20
APPEARS IN
RELATED QUESTIONS
Three coins are tossed together. Find the probability of getting no tails
A bag contains 3 red balls, 5 black balls and 4 white balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is Black
Fill in blank:
Probability of an impossible event is...........
Three coins are tossed together. Write all the possible outcomes. Now, find the probability of getting at least one tail.
20 tickets, on which numbers 1 to 20 are written, are mixed thoroughly and then a ticket is drawn at random out of them. Find the probability that the number on the drawn ticket is a multiple of 3 or 7 ?
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 number is greater than 5.
A number is selected at random from the numbers 1 to 30. What is the probability that the selected number is a prime number?
If you toss a coin 6 times and it comes down heads on each occasion. Can you say that the probability of getting a head is 1? Give reasons.
The king, queen and jack of clubs are removed from a deck of 52 playing cards and then well shuffled. Now one card is drawn at random from the remaining cards. Determine the probability that the card is a king.
An unbiased die is thrown. The probability of getting an odd prime number is ______.
