If 26 ( 2^3 3 12 2+ 2^5 5 12 4+ 2^7 7 12 6+ + 2^ 13 13 12 12 )=3^ 13 - , then α is equal to:

JEE Main 2026 Mathematics question

If , then α is equal to:

Answer: (C)

Since , the bracket equals . The full odd-power sum is $_{j\text{

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Question ID VK-015717