There are 21 typists in an office, five typists use all manual typewriters, electronic typewriters and word processor, nine use electronic and word processor, seven use manual and word processors, six use manual and electronic typewriters, but no one uses manual typewriters only. Represent this information in a Venn diagram. If the same number of typists use electronic as use word processors, then How many use word processors only, How many use electronic typewriters?

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
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There are 21 typists in an office, five typists use all manual typewriters, electronic typewriters and word processor, nine use electronic and word processor, seven use manual and word processors, six use manual and electronic typewriters, but no one uses manual typewriters only.

  1. Represent this information in a Venn diagram.
  2. If the same number of typists use electronic as use word processors, then
  3. How many use word processors only,
  4. How many use electronic typewriters?

 

 

 

 

 

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