Advertisements
Advertisements
Question
Three coins are tossed together. Write all the possible outcomes. Now, find the probability of getting all tails.
Solution
When three coins are tossed, possible outcomes are:
HHH, HHT, HTH, HTT, THH, THT, TTH, TTT
Total possible outcomes = 8
Favorable outcomes for all tails = TTT
Number of favorable outcomes = 1
P(all tails) = `1/8`
APPEARS IN
RELATED QUESTIONS
A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball is double that of a red ball, determine the number of blue balls in the bag
A box contains 12 balls out of which x are black. If one ball is drawn at random from the box, what is the probability that it will be a black ball?
If 6 more black balls are put in the box, the probability of drawing a black ball is now double of what it was before. Find x.
Three horses A, B and C are in a race, A is twice as likely to win as B and B is twice as likely to win as C. What are their probabilities of winning?
In a simultaneous throw of a pair of dice, find the probability of getting neither 9 nor 1 1 as the sum of the numbers on the faces
Fill in blank:
Probability of an impossible event is...........
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.
What is the probability that the card drawn is the eight or the king?
Cards marked with numbers 1, 2, 3 ......... 20 are well shuffled and a card is drawn at random. What is the probability that the number on the card is divisible by 3?
A card is drawn from a pack of well - shuffled 52 playing cards . Find the probability that the card drawn is
(i) a diamond
A dice is thrown once. What is the probability that the number is greater than 2?
There is a square board of side ‘2a’ units circumscribing a red circle. Jayadev is asked to keep a dot on the above said board. The probability that he keeps the dot on the shaded region is ______.
