Mark the correct alternative in the following :
If in the expansion of and , the ratio of the coefficients of second and third terms, and third and fourth terms respectively are equal, then n is

Given:

T₂ ; T₃

(1)

T₃ ; T₄

(2)

Equating both equations:

2(n+1)=3(n-1)

2n+2 = 3n-3

n=5
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1

Question

Mark the correct alternative in the following : If in the expansion of and , the ratio of the coefficients of second and third terms, and third and fourth terms respectively are equal, then n is

Philoid · Accepted Answer

Given:

T₂ ; T₃

(1)

T₃ ; T₄

(2)

Equating both equations:

2(n+1)=3(n-1)

2n+2 = 3n-3

n=5

Mark the correct alternative in the following :If in the expansion of and , the ratio of the coefficients of second and third terms, and third and fourth terms respectively are equal, then n is

Mark the correct alternative in the following :
If in the expansion of and , the ratio of the coefficients of second and third terms, and third and fourth terms respectively are equal, then n is