ISEE Upper Level Mathematics Achievement Quiz
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ADVANCED PATTERNS AND SEQUENCES
Question 1
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A sequence alternates signs and has the pattern
1
2
,
−
2
3
,
3
4
,
−
4
5
,
5
6
,
.
.
.
\frac{1}{2}, -\frac{2}{3}, \frac{3}{4}, -\frac{4}{5}, \frac{5}{6}, ...
2
1
,
−
3
2
,
4
3
,
−
5
4
,
6
5
,
...
What is the
10
10
10
th term?
A
−
10
11
-\frac{10}{11}
−
11
10
B
10
11
\frac{10}{11}
11
10
C
−
9
10
-\frac{9}{10}
−
10
9
D
11
12
\frac{11}{12}
12
11
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