Advertisements
Advertisements
प्रश्न
The probability a red marble selected at random from a jar containing p red, q blue and r green marbles is
पर्याय
`"q"/("p" + "q" + "r")`
`"p"/("p" + "q" + "r")`
`("p" + "q")/("p" + "q" + "r")`
`("p" + "r")/("p" + "q" + "r")`
उत्तर
`"q"/("p" + "q" + "r")`
Explanation;
Hint:
Sample spaces = p + q + r
Let A be the event of getting red
n(A) = p
P(A) = `"q"/("p" + "q" + "r")`
APPEARS IN
संबंधित प्रश्न
Write the sample space for tossing three coins using tree diagram
At a fete, cards bearing numbers 1 to 1000, one number on one card are put in a box. Each player selects one card at random and that card is not replaced. If the selected card has a perfect square number greater than 500, the player wins a prize. What is the probability that the second player wins a prize if the first has won?
Three fair coins are tossed together. Find the probability of getting atmost two tails
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 white
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 queen of red 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 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 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
If a letter is chosen at random from the English alphabets {a, b, …, z}, then the probability that the letter chosen precedes x
