in a group of 60 person 15 drink tea but not coffee 32 drink tea how m

1.	in a group of 60 person 15 drink tea but not coffee 32 drink tea how many drink coffee and tea both how many drink coffee but not tea
Answer» Let A and B be sets of persons who DRINK TEA and coffee respectively. Then N(A∪B)=50 n(A−B)=14 n(A)=30. n(A−B)=14 ⇒n(A)−n(A∩B)=14 ⇒n(A∩B) n(A)−14=30−14=16.

in a group of 60 person 15 drink tea but not coffee 32 drink tea how many drink coffee and tea both how many drink coffee but not tea

Answer»

Let A and B be sets of persons who DRINK TEA and coffee respectively.

Then

N(A∪B)=50

n(A−B)=14

n(A)=30.

n(A−B)=14

⇒n(A)−n(A∩B)=14

⇒n(A∩B)

n(A)−14=30−14=16.

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in a group of 60 person 15 drink tea but not coffee 32 drink tea how many drink coffee and tea both how many drink coffee but not tea​

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in a group of 60 person 15 drink tea but not coffee 32 drink tea how many drink coffee and tea both how many drink coffee but not tea