Published by:
CGP EDU Academic Team
Published on: August 13, 2026
In the expansion of 
, which of the following(s) is/are correct -
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(b, c, d)
= 
General term 5 C r x 15–3r 3 r x –3r
Power = 15 – 6r = 2
⇒ r = 
⇒ non integer
15 – 6r = – 3
⇒ r = 3
⇒ coefficient ≠ 0
15 – 6r = 3
⇒ r = 2
⇒ coefficient ≠ 0
coeff. of x –3 = 5 C 3 3 3 ; coeff. of x 3 = 5 C 2 3 2
ratio = 
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