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2
2018 PUMaC Algebra B2
2018 PUMaC Algebra B2
Source:
December 8, 2018
PuMAC
Problem Statement
For what value of
n
n
n
is
1
2
⋅
5
+
1
5
⋅
8
+
1
8
⋅
11
+
1
n
(
n
+
3
)
=
25
154
\frac{1}{2\cdot5}+\frac{1}{5\cdot8}+\frac{1}{8\cdot 11}+\frac{1}{n(n+3)}=\frac{25}{154}
2
⋅
5
1
+
5
⋅
8
1
+
8
⋅
11
1
+
n
(
n
+
3
)
1
=
154
25
?
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