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Summary of the estimate of memory space occupied by the information worldwide, stored in various storage media, in the year $2000$

In the above graph, for any media of information  storage, the figures in the brackets denote the amount of memory space occupied by the information stored worldwide in that media of information storage. For example, the memory space occupied by the information contained in Music CDs worldwide is $55 \; \text{ TB.}$

Note:

  1. $1$ Tera Byte (TB) of memory space $=10^{12}$ Bytes of memory space.
  2. All storage media are classified into four categories  – Optical, Paper, Film and Magnetic

The information stored in Newspapers, Books and Periodicals forms what percentage of the total information stored on paper media? Assume that the information stored per unit memory space occupied is the same for all the media mentioned.

  1. $37.5\%$
  2. $45\%$
  3. $57\%$
  4. $54\%$
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