Advertisements
Advertisements
प्रश्न
If A is an event of a random experiment such that `"P"("A"):"P"(bar"A")` = 17 : 15 and n(S) = 640 then find `"P"(bar"A")`
उत्तर
`"P"("A"):"P"(bar"A")` = 17 : 15
`("P"("A"))/("P"(bar"A")) = 17/15`
⇒ `(1 - "P"(bar"A"))/("P"(bar"A")) = 17/15`
`17 "P"(bar"A") = 15 [1 - "P"(bar"A")]`
= `15 - 15 "P"(bar"A")`
`17 "P"(bar"A") + 15 "P"(bar"A")` = 15
⇒ `32 "P"(bar"A")` = 15
`"P"(bar"A") = 15/32`
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).
Two unbiased dice are rolled once. Find the probability of getting the sum as a prime number
Three fair coins are tossed together. Find the probability of getting all heads
A bag contains 5 red balls, 6 white balls, 7 green balls, 8 black balls. One ball is drawn at random from the bag. Find the probability that the ball drawn is not white
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 king of black card
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 the same day?
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 consecutive 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 loses the entry fee
Which of the following is incorrect?
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
