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Answer:
The number of members like tea and not coffee is 6.
Step-by-step explanation:
Let T denotes the number of members like tea and C denotes the members like coffee.
Given: The total members in the family=20.
We assume that each one likes at least one of two drinks.
=TUC=20
Members like tea=T=11
Members like coffee=C=14
Using formula of sets: TUC=TUC=20.
TUC=25-20=5
i e =The number of members like both tea and coffee=T-TUC= 11-5=6
Therefore: the number of members like tea and not coffee is 6.
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