Home
Class 12
MATHS
A purse contain n coins of unknown value...

A purse contain n coins of unknown values .a coin is drawn from it at random and is found to be a rupee .Then the chance that it is the only rupee coin in the purse is

A

`(1)/(n)`

B

`(2)/(n+1)`

C

`(1)/((n(n+1)))`

D

`(2)/((n+1))`

Text Solution

Verified by Experts

The correct Answer is:
d
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    ARIHANT MATHS|Exercise Exercise For Session 4|15 Videos

  • PROBABILITY

    ARIHANT MATHS|Exercise Exercise (Single Option Correct Type Questions)|29 Videos

  • PROBABILITY

    ARIHANT MATHS|Exercise Exercise For Session 2|15 Videos

  • PERMUTATIONS AND COMBINATIONS

    ARIHANT MATHS|Exercise Exercise (Questions Asked In Previous 13 Years Exam)|28 Videos

  • PRODUCT OF VECTORS

    ARIHANT MATHS|Exercise Exercise (Questions Asked In Previous 13 Years Exam)|52 Videos

Similar Questions

Explore conceptually related problems

In a purse there are 10 coins, all 5 paise except one which is a rupee. In another purse there are 10 coins all 5 paise. 9 coins are taken out from the former purse & put into the latter & then 9 coins aretaken out from the latter & put into the former. Then the chance that the rupee is still in the first purse is: (A) 9/19 (B) 10/19 (C) 4/9 (D) none

A purse contains 5 coins, each either a fifty-paisa coin or one-rupee coin. Two coins are drawn at random and are found to be one-rupee coins. Find the expected (probable) total value of the remaining coins.

A bag contains 10 coins of which at least 2 are one-rupee coins. Two coins are drawn and both are found to be not one-rupee coins. What is the probability of the bag to contain exactly 2 one-rupee coins?

A purse contains 4 coins which are either sovereigns or shillings 2 coins are drawn and found to be shillings: if these are replaced what is the chance that another drawing will give a sovereign?

A purse contains a certain number of coins of denominations Rs 1 and 25 paise. The total value of the coins (in Rs) is 6 less than the total number of coins. Find the number of 25 paise coins

A purse contains a cetain number of coins fo denominations Re. 1 and 50 paise. The total value of the coins (in Rs) is 14 less than the total number of coins. Find the number of 50 paise coins

A box contain 280 coins of one rupee, 50 paise and 25 paise. The values of each kind of coin are in the ratio of 8:4:3. The number of one rupee coins will be