Advertisements
Advertisements
प्रश्न
An unbiased coin is tossed twice. Find the probability of getting at most one head.
उत्तर
On tossing a coin twice,
Possible outcomes are {TT, HH, HT, TH}
Required outcomes are {HT, TH, TT}
Probability of getting at most one head = `3/4`
APPEARS IN
संबंधित प्रश्न
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?
A card is drawn at random from a pack of 52 cards. Find the probability that card drawn is the seven of clubs
A bag contains cards which are numbered from 2 to 90. A card is drawn at random from the bag. Find the probability that it bears a number which is a perfect square
A game of chance consists of spinning an arrow which is equally likely to come to rest pointing to one of the number, 1, 2, 3, ..., 12 as shown in Fig. below. What is the probability that it will point to 10?
Fill in blank:
Probability of an event A + Probability of event ‘not A’ ...........
Two dice (each bearing numbers 1 to 6) are rolled together. Find the probability that the sum of the numbers on the upper-most faces of two dice is between 5 and 8.
Tickets numbered 2, 3, 4, 5, ..., 100, 101 are placed in a box and mixed thoroughly. One ticket is drawn at random from the box. Find the probability that the number on the ticket is a number less than 16.
A letter is chosen at random from the letters of the word ASSOCIATION. Find the probability that the chosen letter is a vowel.
A child has a die whose six faces show the letters as given below:
| A | B | C | D | E | F |
The die is thrown once. The probability of getting a ‘D’ is ____________.
A letter is chosen at random from all the letters of the English alphabets. The probability that the letter chosen is a vowel, is ______.
