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anonymous

  • one year ago

in a group of 100 persons 60 like tea 7 like coffee. if x persons like both tea and coffee show 35 <= x <=6 0

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  1. anonymous
    • one year ago
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    75 like coffee

  2. BAdhi
    • one year ago
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    Its obvious that \(x \leq 60\) since the group which like both tea and cofee is a subset of the group that like tea, and the group that like coffee. Thus, \(x \leq Min\{\text{no. of coffe people}, \text{no. of tea people} \}\) now from the venn diagram, \(60 + 75 -x \leq 100\) |dw:1440479236933:dw|

  3. triciaal
    • one year ago
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    |dw:1440481316707:dw|

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