Advertisements
Advertisements
प्रश्न
If a letter is chosen at random from the English alphabets {a, b, …, z}, then the probability that the letter chosen precedes x
विकल्प
`12/13`
`1/13`
`23/26`
`3/26`
उत्तर
`23/26`
Explanation;
Hint:
n(S) = 26
Let A denote the letter chosen precedes x
A = {a, b, c, d, …, x}
n(A) = 23
P(A) = `("n"("A"))/("n"("S")) = 23/26`
APPEARS IN
संबंधित प्रश्न
Write the sample space for selecting two balls from a bag containing 6 balls numbered 1 to 6 (using tree diagram).
If A is an event of a random experiment such that `"P"("A") : "P"(bar"A")` = 17 : 15 and n(S) = 640 then find n(A)
A bag contains 12 blue balls and x red balls. If one ball is drawn at random if 8 more red balls are put in the bag, and if the probability of drawing a red ball will be twice that it will be a red ball, then find x.
Three fair coins are tossed together. Find the probability of getting all heads
In a box there are 20 non-defective and some defective bulbs. If the probability that a bulb selected at random from the box found to be defective is `3/8` then, find the number of defective bulbs
The king and queen of diamonds, queen and jack of hearts, jack and king of spades are removed from a deck of 52 playing cards and then well shuffled. Now one card is drawn at random from the remaining cards. Determine the probability that the card is a clavor
Some boys are playing a game, in which the stone thrown by them landing in a circular region is considered as win and landing other than the circular region is considered as a loss. What is the probability to win the game? (π = 3.14)
Two customers Priya and Amuthan are visiting a particular shop in the same week (Monday to Saturday). Each is equally likely to visit the shop on any one day as on another day. What is the probability that both will visit the shop on different days?
In a game, the entry fee is ₹ 150. The game consists of tossing a coin 3 times. Dhana bought a ticket for entry. If one or two heads show, she gets her entry fee back. If she throws 3 heads, she receives double the entry fees. Otherwise, she will lose. Find the probability that she gets double entry fee
The probability of getting a job for a person is `x/3`. If the probability of not getting the job is `2/3` then the value of x is
