Advertisements
Advertisements
Question
A piggy bank contains hundred 50 paise coins, fifity ₹1 coins, twenty ₹2 coins and ten ₹5 coins. If it is equally likely that one of the coins will fall out when the bank is turned upside down, find the probability that the coin which fell will be a 50 paise coin
Solution
Total number of coins = 100 + 50 + 20 + 10 = 180
So, the total number of outcomes is 180.
(i) Number of 50 paise coins = 100
So, the favourable number of outcomes are 100.
∴ P(the coin which fell is a 50 paise coin) = \[\frac{\text{ Favourable number of outcomes }}{\text{ Total number of outcomes }} = \frac{100}{180} = \frac{5}{9}\]
APPEARS IN
RELATED QUESTIONS
Find the class mark of the classes 20-30 and 30-40.
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.
Two different coins are tossed simultaneously. The probability of getting at least one head is
(A)`1/2`
(B)`1/8`
(C)`3/4`
(D)`7/8`
Cards bearing numbers 2, 3, 4, ..., 11 are kept in a bag. A card is drawn at random from the bag. The probability of getting a card with a prime number is
One card is drawn at random from a well shuffled deck of 52 cards. What is the probability of getting an ace?
The probability of an impossible event is
In a family of 3 children, the probability of having at least one boy is
A lot consists of 144 ballpoint pens of which 20 are defective and others good. Tanvy will buy a pen if it is good, but will not buy it if it is defective. The shopkeeper draws one pen at random and gives it to her. What is the probability that she will not buy it?
A card is drawn at random from a well-shuffled pack of 52 cards. Find the probability that the card drawn is neither a red card nor a queen.
A bag contains 8 red, 2 black and 5 white balls. One ball is drawn at random. What is the probability that the ball drawn is not black?
If two coins are tossed, then find the probability of the event: No heads turns up.
A coin is tossed twice. Find the probability of getting: two tails
Three identical coins are tossed together. What is the probability of obtaining:
no head?
Two dice are thrown at the same time. Find the probability that the sum of the two numbers appearing on the top of the dice is: less than 12
What is the probability of drawing a King or a Queen or a Jack from a deck of cards?
Frame two problems in calculating probability, based on the spinner shown here.
An event is very unlikely to happen. Its probability is closest to ______.
If a pair of coins is tossed, then the number of outcomes are 2.
To verify pythagoras theorem is a random experiment.
A dice is rolled once. What is the probability that the number on top will be greater than 5
