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CGP EDU Academic Team
Published on: August 13, 2026
Coefficient of x 25 in expansion of expression
(2x – 3) r (2 – x) 50 – r is :
Text Solution
Verified by ExpertsThe correct answer is:
D
(2x – 3) r (2 – x) 50 – r = ((2 – x) + (2x – 3))
50 = (x –1)
50
= (1 –x) 50
= 50 C 0 – 50 C 1 x ...........– 50 C 25 x 25 + ......
coefficient of x 25 is – 50 C 25
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