Advertisements
Advertisements
प्रश्न
A box contains 75 tickets numbered 1 to 75. A ticket is drawn at random from the box. What is the probability that, number on ticket is prime?
उत्तर
The box contains 75 tickets numbered 1 to 75.
∴ 1 ticket can be drawn from the box in 75C1 = 75 ways.
∴ n(S) = 75
Let C be the event that the number on the ticket is a prime number
∴ C = {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73}
∴ n(C) = 21
∴ P(C) = `("n"("C"))/("n"("S")`
= `21/75`
= `7/25`
APPEARS IN
संबंधित प्रश्न
A fair die is thrown two times. Find the chance that product of the numbers on the upper face is 12.
A fair die is thrown two times. Find the chance that sum of the numbers on the upper face is 4.
A fair die is thrown two times. Find the chance that the first throw gives an odd number and second throw gives multiple of 3.
A fair die is thrown two times. Find the chance that both the times die shows same number (doublet).
Two cards are drawn from a pack of 52 cards. Find the probability that both are ace cards.
Two cards are drawn from a pack of 52 cards. Find the probability that one is spade and other is non-spade.
Four cards are drawn from a pack of 52 cards. Find the probability that 3 are king and 1 is jack.
Four cards are drawn from a pack of 52 cards. Find the probability that at least one heart.
A bag contains 15 balls of three different colours: Green, Black and Yellow. A ball is drawn at random from the bag. The probability of green ball is `1/3`. The probability of yellow ball is `1/5`. How many balls are green, black, and yellow?
A box contains 75 tickets numbered 1 to 75. A ticket is drawn at random from the box. What is the probability that, number on ticket is a perfect square?
A box contains 75 tickets numbered 1 to 75. A ticket is drawn at random from the box. What is the probability that, number on ticket is divisible by 3 and 5?
From a group of 8 boys and 5 girls, a committee of five is to be formed. Find the probability that the committee contains at least 3 boys.
The letters of the word LOGARITHM are arranged at random. Find the probability that vowels are always together.
The letters of the word LOGARITHM are arranged at random. Find the probability that vowels are never together.
The letters of the word LOGARITHM are arranged at random. Find the probability that Exactly 4 letters between G and H.
The letters of the word SAVITA are arranged at random. Find the probability that vowels are always together.
