Advertisements
Advertisements
Question
Cards bearing numbers 3 to 20 are placed in a bag and mixed thoroughly. A card is taken out of the bag at random. What is the probability that the number on the card taken out is an even number?
Options
`9/17`
`1/2`
`5/9`
`7/18`
Solution
`bb(1/2)`
Explanation:
Total number of card = 18
n(S) = 18
A = Even numbers from 3 to 20
(A) = 4, 6, 8, 10, 12, 14, 16, 18, 20
n(A) = 9
Required probability P(A) = `(n(A))/(n(S)) = 9/18`
P(A) = `1/2`
APPEARS IN
RELATED QUESTIONS
A card is drawn at random from a pack of 52 cards. Find the probability that card drawn is either a black card or a king
A black die and a white die are thrown at the same time. Write all the possible outcomes. What is the probability of obtaining a total of 10?
Seven cards:- the eight, the nine, the ten, jack, queen, king and ace of diamonds are well shuffled. One card is then picked up at random.
If the king is drawn and put aside, what is the probability that the second card picked up is:
- an ace?
- a king?
How many possibilities is the following?
Vanita knows the following sites in Maharashtra. She is planning to visit one of them in her summer vacation.
Ajintha, Mahabaleshwar, Lonar Sarovar, Tadoba wild life sanctuary, Amboli, Raigad, Matheran, Anandavan.
A box contains 30 tickets, bearing only one number from 1 to 30 on each. If one ticket is drawn at random, find the probability of an event that the ticket drawn bears an odd number .
A die is rolled twice. Find the probability that 5 will come up both the times.
Fill in the blank:
The probability of a possible but not a sure event lies between ......... and ........ .
A dice is thrown once. What is the probability that the number is even?
A bag contains 10 red, 5 blue and 7 green balls. A ball is drawn at random. Find the probability of this ball being a green ball.
From a well-shuffled deck of 52 cards, a card is drawn at random. What is the probability of getting king of hearts?
