Advertisements
Advertisements
Question
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
2 or 3
Solution
Total outcomes = 10
i.e. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Favourable outcomes = 7
i.e. 2,3,4,6,8,9,10
P(E) = `7/10`
APPEARS IN
RELATED QUESTIONS
A bag contains 25 cards numbered from 1 to 25. A card is drawn at random from the bag. Find the probability that the number on the drawn card is:
(i) divisible by 3 or 5
(ii) a perfect square number
Choose the correct alternative answer for the following question.
A die is rolled. What is the probability that the number appearing on upper face is less than 3 ?
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 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 patient
Cards numbered 1 to 30 are put in a bag. A card is drawn at random from this bag. Find the probability that the number on the drawn card is not a perfect square number
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 isa prime number less than 20
Cards each marked with one of the numbers 4, 5, 6, ..., 20 are placed in a box and mixed thoroughly. One card is drawn at random from the box. What is the probability of getting an even number?
The probability of getting an even number, when a die is thrown once is
Two different dice are rolled simultaneously. Find the probability that the sum of the numbers on the two dice is 10.
Cards numbered 1 to 30 are put in a bag. A card is drawn at random from the bag. Find the probability that the number on the drawn card is not divisible by 3,
The probability of selecting a red ball at random from the jar that contains only red, blue and orange balls is `1/4`. The probability of selecting a blue ball at random from the same jar is `1/3`. If the jar contains 10 orange balls, find the total number of balls in the jar.
A die is thrown once. The probability of getting an even number is
If two coins are tossed, then find the probability of the event: No heads turns up.
A die is thrown, then find the probability of the following events:
A is an event: getting a perfect square.
B is an event: getting a prime number.
A die is thrown once. Find the probability of getting a number which
lies between 2 and 6.
A die is thrown, find the probability of getting:
a number greater than 4
In a single throw of a die, find the probability of getting :
(i) 8
(ii) a number greater than 8
(iii) a number less than 8
What is the probability of drawing a King or a Queen or a Jack from a deck of cards?
I toss three coins together. The possible outcomes are no heads, 1 head, 2 heads and 3 heads. So, I say that probability of no heads is `1/4`. What is wrong with this conclusion?
If a pair of coins is tossed, then the number of outcomes are 2.