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Byju's Answer
Standard X
Mathematics
Patterns, Sequences
First term of...
Question
First term of an AP is 5. If its common difference is -2, Find the
n
t
h
term
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Solution
a
=
5
d
=
−
2
a
n
=
a
+
(
n
−
1
)
d
=
5
+
(
n
−
1
)
(
−
2
)
a
n
=
7
−
2
n
nth term will be
=
7
−
2
n
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