English

Two Coins Are Tossed Simultaneously. Find the Probability of Getting at Least One Head. - Algebra

Advertisements
Advertisements

Question

Two coins are tossed simultaneously. Find the probability of getting at least one head.

Solution

s = {HH, HT, TH, TT}
n (s) = 4
A = {HH, HT, TH}
n(A) = 3
`p(A)=(n(A))/(n(S)) = 3/4`

shaalaa.com
  Is there an error in this question or solution?
2018-2019 (March) Balbharati Model Question Paper Set 1

RELATED QUESTIONS

In a hockey team, there are 6 defenders, 4 offenders, and 1 goalee. Out of these, one player is to be selected randomly as a captain. Find the probability of the selection that – The goalee will be selected.


Five cards − the ten, jack, queen, king and ace of diamonds, are well-shuffled with their face downwards. One card is then picked up at random.

If the queen is drawn and put a side, what is the probability that the second card picked up is (a) an ace? (b) a queen?


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 of value more than ₹1


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 ₹1 or ₹2 coin    


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   


A black die and a white die are thrown at the same time. Write all the possible outcomes. What is the probability? 

that the numbers obtained have a product less then 16.


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   


The probability of guessing the correct answer to a certain test questions is\[\frac{x}{12}\] If the probability of not  guessing the correct answer to this question is\[\frac{ 2}{3}\] then x = 


17 cards numbered 1, 2, 3, 4, .... ,17 are put in a box and mixed thoroughly. A card is drawn at random from the box. Find the probability that the card drawn bears a number divisible by 5.


A card is drawn at random from a well-shuffled pack of 52 cards. Find the probability of getting a red king,


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?


A die is thrown once. Find the probability of getting a composite number


Three identical coins are tossed together. What is the probability of obtaining:
no head?


There are 24 balls in a pot. If 3 of them are Red, 5 of them are Blue and the remaining are Green then, what is the probability of picking out a Blue ball?


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?


An experiment whose outcomes cannot be predicted exactly in advance is called a ______ experiment.


A dice is rolled once. What is the probability that the number on top will be less than 1


A dice is rolled once. What is the probability that the number on top will be a factor of 36


Playing cards now the following cards are added to the above cards:

What is the probability of Suhail winning now? Reshma wins if she picks up a 4. What is the probability of Reshma winning?

[Queen, King and Jack cards are called face cards.]


Sonia picks up a card from the given cards.


Calculate the probability of getting B card bearing number > 7


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×