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In a group of 70€ people's,37 …

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In a group of 70€ people's,37 likes coffe,52 likes tea and each person like least one of the drink. How many like both coffe and tea
  • 2 answers

Ravi Kumar 6 years, 3 months ago

n(AUB)=70 n(A)= 37 n(B)= 52 n(AUB)=n(A)+n(B)-n(A insec.B) 70 =37 +52- n(A insec.B) n(A insec.B)=89-70 =19 Then no. Of peoples who drink both coffee and tea.

Ravi Kumar 6 years, 3 months ago

Let coffee denoted by A tea denoted by. B
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