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CGP EDU Academic Team
Published on: August 12, 2026
In the expansion of (2 + a) 50 , 17 th & 18 th terms are equal then find 'a'
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Sol. T 17 = T 16+1 = 50 C 16 . 2 34 . a 16 , T 18 = T 17+1 = 50 C 17 2 33 . a 17
50 C 16 . 2 34 . a 16 = 50 C 17 . 2 33 . a 17 ⇒ a = 
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