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UPSC CDS-I 2019 Math Solved Paper
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© examsnet.com
Question : 1
Total: 100
What is the remainder when
(
17
29
+
19
29
)
is divided by 18 ?
[2019 CDS-I]
6
2
1
0
Validate
Solution:
Remainder of
(
17
29
+
19
29
18
)
= Remainder of
(
17
29
18
+
19
29
18
)
= Remainder of
[
(
−
1
)
29
18
+
(
1
)
29
18
]
= Remainder of
(
−
1
18
+
1
18
)
= Remainder of
(
17
18
+
1
18
)
= Remainder of
(
18
18
)
=
0
© examsnet.com
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