Q. 2 The weight of a sequence a,a1,…,an−1a0,a1,…,an−1 of real numbers is defined as a+a1/2+⋯+an−1/2n−1a0+a1/2+⋯+an−1/2n−1. A subsequence of a sequence is obtained by deleting some elements from the sequence, keeping the order of the remaining elements the same. Let XX denote the maximum possible weight of a subsequence of ao,a1,…,an−1ao,a1,…,an−1 and YY the maximum possible weight of a subsequence of a1,a2,…,an−1a1,a2,…,an−1. Then XX is equal to
Answer: (B)
Explanation:
