(singleton/null) 6. If A = {1, 2, 3, 4, 5, ..., 10), then the number of
subsets of A which consists of 2, 4, 6, 8, and 10 but
not 1, 3, 5, 7, and 9 is 1 See answer csharmarajpur is waiting for your help. Add your answer and earn points. Purnachaitanya Purnachaitanya
Answer:
Number of elements in A=10
Number of subsets of A containing exactly two elements
= Number of ways we can select 2 elements from 10 elements
10
C
2
=
2
10×9
=45
∴ Number of subsets of A containing exactly two elements =45
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