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In a book with page numbers from 1 to 10...

In a book with page numbers from 1 to 100, sme pages are torn off. The sum of the numbers on the remaining pages is 4949. How many pages are torn off ?

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Knowledge Check

  • How many margins are there on a page?

    A
    Two (header and footer)
    B
    Four (top, bottom, right, left)
    C
    Two (landscape and portrait)
    D
    Two (top and bottom)

  • He had already torn the pages of the book.

    A
    The pages of the book has already been torn by him.
    B
    The pages of the book have already been torn by him.
    C
    The pages of the book had already been torn by him.
    D
    The pages of the book had already torn by him.

  • A book contains 1000 pages numbered consecutively. The probability that the sum of the digits of the number of a page is 9, is:

    A
    zero
    B
    `(55)/(1000)`
    C
    `(33)/(1000)`
    D
    `(44)/(1000)`

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    A book is published in three volumes, the pages being numbered from 1 onwards. The page numbers are continued from the first volume to the second volume to the third. The number of pages in the second volume is 50 more than that in the first volume, and the number pages in the third volume is one and a half times that in the second. The sum of the page numbers on the first pages of the three volumes is 1709. If n is the last page number, what is the largest prime factor of n ?

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