Question

Let SS be the universal set, where:
S={1,2,3,...,28,29,30}S={1,2,3,...,28,29,30}
Let sets AA and BB be subsets of SS, where:

Set A={1,8,13,14,16,17,20,25,27,28}A={1,8,13,14,16,17,20,25,27,28}

Set B={6,7,9,13,14,30}B={6,7,9,13,14,30}

Set C={5,8,10,11,13,14,15,17,23,25,28}C={5,8,10,11,13,14,15,17,23,25,28}

Find the number of elements in the set (A∩B)(A∩B)
n(A∩B)n(A∩B) =

Find the number of elements in the set (B∩C)(B∩C)
n(B∩C)n(B∩C) =

Find the number of elements in the set (A∩C)(A∩C)
n(A∩C)n(A∩C) =

Answer 1

1). [write the elements that are common in A and B ]

the number of elements in the set (A∩B) is :-

2). [write the elements that are common in B and C ]

the number of elements in the set (B∩C) is :-

3). [write the elements that are common in A and C ]

the number of elements in the set (A∩C) is :-

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