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KEAM 2018 Math Paper
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© examsnet.com
Question : 60
Total: 120
1
9
!
+
1
3
!
7
!
+
1
5
!
5
!
+
1
7
!
3
!
+
1
9
!
is equal to
2
9
10
!
2
10
8
!
2
11
9
!
2
10
7
!
2
8
9
!
Validate
Solution:
1
9
!
+
1
3
!
7
!
+
1
5
!
7
!
+
1
7
!
3
!
+
1
9
!
=
1
10
!
[
10
!
9
!
!
!
+
10
!
3
!
7
!
+
10
!
5
!
7
!
+
10
!
7
!
3
!
+
10
!
9
!
1
!
]
=
1
10
!
[
10
C
1
+
10
C
3
+
10
C
5
+
10
C
7
+
10
C
9
]
=
1
10
!
⋅
2
9
=
2
9
10
!
© examsnet.com
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