The number of subsets of the set A = a 1 , a 2 , . . . . , a n which contain even number…

Mathematics · JEE Advanced · NTA Exams — Permutations and Combinations

1. 2^{n – 1}
2. 2ⁿ – 1
3. 2ⁿ – 2
4. 2ⁿ

Answer

(A) 2 n – 1

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