Home
Class 11
MATHS
An um contains 30 tickets numbered 1 to ...

An um contains 30 tickets numbered 1 to 30 two tickets are drawn at random the probability that both the numbers are prime is

A

`^8c_2//(30c_2)`

B

`^9c_2//^30c_2`

C

`^10c_2//^30c_2`

D

`^11c_2//^30c_2`

Text Solution

Verified by Experts

The correct Answer is:
C
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • PRINCIPLE OF MATHEMATICAL INDUCTION AND LINEAR INEQUATIONS

    PATHFINDER|Exercise QUESTION BANK|14 Videos
  • PROGRESSION AND SERIES

    PATHFINDER|Exercise QUESTION BANK|252 Videos

Similar Questions

Explore conceptually related problems

In a lottery of 50 tickets numbered 1 to 50, one ticket is drawn. Find the probability that the drawn ticket bears a prime number.

A box contains 10 tickets numbered from 1 to 10 . Two tickets are drawn one by one without replacement. The probability that the "difference between the first drawn ticket number and the second is not less than 4" is

Knowledge Check

  • An urn contains 9 red, 7 white, and 4 black balls if two balls are drawn at random the probability that both the balls are red is

    A
    (18/95)
    B
    (36/95)
    C
    (18/190)
    D
    none of these
  • From a set of 100 cards numbered 1 to 100, one card is drawn at random. The probability that the number obtained on the card is divisible by 6 or 8 but not by 24 is -

    A
    `(6)/(25)`
    B
    `(1)/(5)`
    C
    `(2)/(5)`
    D
    `(8)/(25)`
  • From a set of 100 cards numbered 1 to 100, one card is drawn at random. The probability that the number obtained on the card is dividible by 6 is-

    A
    `4/25`
    B
    `8/25`
    C
    `3/20`
    D
    `9/50`
  • Similar Questions

    Explore conceptually related problems

    Out of 21 tickets marked with numbers , from 1 to 21 , three are drawn at random, find the probability that the three numbers on them are in A.P.

    If from the numbers 1,2,3… 30 three are drawn at randomm find the probability that they are in G.P.

    The box contains tickets numbered from 1 to 20. Three tickets are drawn from the box with replacement. The probability that the largest number on the tickets is 7 is a. 2//19 b. 7//20 c. 1-(7//20)^3 d. none of these

    Out of (2n +1) tickets cosecutively numbered, three are drawn of random, find the probability that the three number on them are in A.P.

    From 100 tickets numbered 1, 2,3.. ..... 100.four are drawn at random. What is the probability that 2 of them will bear numbers from1 to 40 and the other 2 will- bear any number from 41 to 100?