Advertisements
Advertisements
Question
A die is thrown once. Find the probability of getting a number less than 3.
Solution
A dice is thrown once
TO FIND: Probability of getting a number less than 3
Total number on a dice is 6.
Number less than 3 are1 and 2
Total number of numbers less than 3 is 2
`"We know that PROBABILITY" ="Number of favourable event" /"Total number of event"`
`"Hence probability of getting a number less than 3 is equal to"=2/6=1/3`
`"Hence probability of getting a number less than"=3=1/3`
APPEARS IN
RELATED QUESTIONS
The probability of selecting a red ball at random from a 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 1/3. If the jar contains 10 orange balls, find the total number of balls in the jar.
Two different dice are rolled together. Find the probability of getting even numbers on both dice.
A bag contains cards numbered from 1 to 49. A card is drawn from the bag at random, after mixing the cards thoroughly. Find the probability that the number on the drawn card is multiple of 5.
A box contains cards bearing numbers from 6 to 70. If one card is drawn at random from the box, find the probability that it bears
(i) a one digit number.
(ii) a number divisible by 5.
(iii) an odd number less than 30.
(iv) a composite number between 50 and 70.
The probability of getting an even number, when a die is thrown once, is :
(A) `1/2`
(B)`1/3`
(C)`1/6`
(D)`5/6`
All kings, queens and aces are removed from a pack of 52 cards. The remaining cards are well shuffled and then a card is drawn from it. Find the probability that the drawn card is (i) a black face card. (ii) a red card.
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
A box contains 20 cards numbered from 1 to 20. A card is drawn at random from the box. Find the probability that the number on the drawn card is a prime number
Red queens and black jacks are removed from a pack of 52 playing cards. A card is drawn at random from the remaining cards, after reshuffling them. Find the probability that the card drawn is a king
A bag contains three green marbles, four blue marbles, and two orange marbles, If a marble is picked at random, then the probability that it is not an orange marble is
A two digit number is to be formed using the digits 0, 1, 2, 3. Repetition of the digits is allowed. Find the probability that a number so formed is a prime number.
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 carton consists of 100 shirts of which 88 are good and 8 have minor defects. Rohit, a trader, will only accept the shirts which are good. But Kamal, an another trader, will only reject the shirts which have major defects. One shirt is drawn at random from the carton. What is the probability that it is acceptable to Rohit.
Five cards − the ten, jack, queen, king and ace of diamonds are well shuffled with their faces downwards. One card is then picked up at random. What is the probability that the drawn card is the queeen?
A father's age is three times the sum of the ages of his two children. After 5 years his age will be two times the sum of their ages. Find the present age of the father.
When two coins are tossed, what is the probability that two heads are obtained?
A coin is tossed 12 times and the outcomes are observed as shown below:
The chance of occurrence of Head is
When a dice is thrown, outcomes 1, 2, 3, 4, 5, 6 are equally ______.
Sonia picks up a card from the given cards.
Calculate the probability of getting a Y card
Sonia picks up a card from the given cards.
Calculate the probability of getting a G card
