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VITEEE 2011 Solved Paper
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© examsnet.com
Question : 96
Total: 120
The sum of the coefficients of
(
6
a
−
5
b
)
n
, where n is a positive integer, is
1
-1
2
n
2
n
−
1
Validate
Solution:
For the sum of the coefficients in the expansion of
(
6
a
−
5
b
)
n
, put a = b = 1
∴ Sum of the coefficients =
(
6
−
5
)
n
=
1
n
= 1
© examsnet.com
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