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`        A set contains (2n+1) elements. The number of subsets of this set containing more than n elements is equal to 1.2power n-1 2.2power n 3.2power n+1 4.2power 2n.`
one year ago

Arun
22613 Points
```							 Dear Abhinav Consider a subset of a set of (2n+1) elements and its complement. Exactly one of the two has more than n elements.Since the total number of sets is 2(2n+1),And they come in complementary pairs , exactly half i.e. 22n , have more than n elements. Hence option D is correct.  RegardsArun (askIITians forum expert)
```
one year ago
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