Home
Class 12
MATHS
There are 10 books in a shelf with diffe...

There are 10 books in a shelf with different titles:five or these have red cover and others have green cover. In how many ways can these be arranged so that the red books are placed together ?

Text Solution

Verified by Experts

There are 10 books in a shelf with different titles, 5 of these are red covers and others are green covers considering 5 red covered books as one book, we have all total 6 books as one book, we have all total 6 books which can be arranged in "6!" ways. The five red cover books arranged among themselves in 5! ways.
`:.` The total number of arrangements `=5!xx6!`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MATRICES

    MBD PUBLICATION|Exercise QUESTION BANK|139 Videos

  • PRINCIPLES OF MATHEMATICAL INDUCTION

    MBD PUBLICATION|Exercise QUESTION BANK|16 Videos

Similar Questions

Explore conceptually related problems

In how many ways can 10 boys and 10 girls sit in a row so that no two boys sit together ?

In how many ways can six men and seven girls sit in a row so that the girls always sit together ?

Knowledge Check

  • A book looks red when seen through a piece of red glass. Then the cover must be of

    A
    red colour
    B
    white
    C
    green
    D
    red or white

  • Read the following passage and answer the question from 1 to 5 : The drink of Asia for hundreds of years, tea is believed to have been brought to Europe by the Dutch. Today , from the extreme corner of Ladakh to Buckingham Palace , tea is another name of cheer . It ios rightly said that there is no agreement on a perfect cup of tea. Though for tea drinkers the brew is addictive , the preferred method of perparation and taste is different from person to person and regions to region . Today many varieties of tea and tea brands are availble in the market. A new thing is a tea - bag . It is easy , quick and less troublesome than traditional ways , of brewing tea . Green tea is popular in china and Far of greeting guests and is a soical occasion . Unlike the tea we are familiar with green tea is not drunk with sugar or milk . It is an olive colured liquid served in porcelain cups. In Morocco, green tea has fresh mint leaves in it . Tea is believed to have been brought to Enrope by :

    A
    Chinese
    B
    Dutch
    C
    English
    D
    Indians

  • Read the following passage and answer the question from 1 to 5 : The drink of Asia for hundreds of years, tea is believed to have been brought to Europe by the Dutch. Today , from the extreme corner of Ladakh to Buckingham Palace , tea is another name of cheer . It ios rightly said that there is no agreement on a perfect cup of tea. Though for tea drinkers the brew is addictive , the preferred method of perparation and taste is different from person to person and regions to region . Today many varieties of tea and tea brands are availble in the market. A new thing is a tea - bag . It is easy , quick and less troublesome than traditional ways , of brewing tea . Green tea is popular in china and Far of greeting guests and is a soical occasion . Unlike the tea we are familiar with green tea is not drunk with sugar or milk . It is an olive colured liquid served in porcelain cups. In Morocco, green tea has fresh mint leaves in it . The new way for serving the tea is

    A
    with only sugar
    B
    with only milk
    C
    without sugar and milk
    D
    with warm water

    • Similar Questions

    Explore conceptually related problems

    Find the number of ways in which 5 different books can be arranged on a shelf.

    Three volumes of book and five volumes of another book are placed at random on a book shelf. Find the probability that all volumes of both the books will be found together.

    Read the following passage and answer the question from 1 to 5 : The drink of Asia for hundreds of years, tea is believed to have been brought to Europe by the Dutch. Today , from the extreme corner of Ladakh to Buckingham Palace , tea is another name of cheer . It ios rightly said that there is no agreement on a perfect cup of tea. Though for tea drinkers the brew is addictive , the preferred method of perparation and taste is different from person to person and regions to region . Today many varieties of tea and tea brands are availble in the market. A new thing is a tea - bag . It is easy , quick and less troublesome than traditional ways , of brewing tea . Green tea is popular in china and Far of greeting guests and is a soical occasion . Unlike the tea we are familiar with green tea is not drunk with sugar or milk . It is an olive colured liquid served in porcelain cups. In Morocco, green tea has fresh mint leaves in it . Another name of cheer is :

    Read the following passage and answer the question from 1 to 5 : The drink of Asia for hundreds of years, tea is believed to have been brought to Europe by the Dutch. Today , from the extreme corner of Ladakh to Buckingham Palace , tea is another name of cheer . It ios rightly said that there is no agreement on a perfect cup of tea. Though for tea drinkers the brew is addictive , the preferred method of perparation and taste is different from person to person and regions to region . Today many varieties of tea and tea brands are availble in the market. A new thing is a tea - bag . It is easy , quick and less troublesome than traditional ways , of brewing tea . Green tea is popular in china and Far of greeting guests and is a soical occasion . Unlike the tea we are familiar with green tea is not drunk with sugar or milk . It is an olive colured liquid served in porcelain cups. In Morocco, green tea has fresh mint leaves in it . For the tea drinkers what is addictive ?

    Read the following passage and answer the question from 1 to 5 : The drink of Asia for hundreds of years, tea is believed to have been brought to Europe by the Dutch. Today , from the extreme corner of Ladakh to Buckingham Palace , tea is another name of cheer . It ios rightly said that there is no agreement on a perfect cup of tea. Though for tea drinkers the brew is addictive , the preferred method of perparation and taste is different from person to person and regions to region . Today many varieties of tea and tea brands are availble in the market. A new thing is a tea - bag . It is easy , quick and less troublesome than traditional ways , of brewing tea . Green tea is popular in china and Far of greeting guests and is a soical occasion . Unlike the tea we are familiar with green tea is not drunk with sugar or milk . It is an olive colured liquid served in porcelain cups. In Morocco, green tea has fresh mint leaves in it . What is new for the tea as tea-brand ?

    Home
    Profile