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Mathematics
Mathematics
Problem
1. Which term of the
A
P
:
121
,
117
,
113
,
…
\mathrm{AP}: 121,117,113, \ldots
AP
:
121
,
117
,
113
,
…
, is its first negative term? [Hint : Find
n
n
n
for
a
n
<
0
a_{n}<0
a
n
<
0
]
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