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© examsnet.com
Question : 12
Total: 24
If
n
∊
N
then
121
n
−
25
n
+
1900
n
−
(
−
4
)
n
is divisible by which of the following?
[NDA I 2018]
1904
2000
2002
2006
Validate
Solution:
Putting
n
=
1
,
121
n
−
25
n
+
1900
n
−
(
−
4
)
n
=
121
−
25
+
1900
+
4
=
2000
Which is divisible by 2000.
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