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Byju's Answer
Standard X
Mathematics
nth Term of an AP
ii In the fol...
Question
Question 3 (ii)
In the following APs, find the missing term in the boxes.
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Solution
F
o
r
t
h
e
g
i
v
e
n
A
.
P
,
a
2
=
13
a
n
d
a
4
=
3
We know that,
a
4
=
a
2
+
d
+
d
⇒
3
=
13
+
2
d
⇒
2
d
=
3
−
13
=
−
10
⇒
d
=
−
10
2
=
−
5
a
n
=
a
+
(
n
−
1
)
d
⇒
a
2
=
a
+
(
2
−
1
)
(
−
5
)
⇒
13
=
a
+
(
−
5
)
⇒
a
=
18
∴
a
3
=
18
+
(
3
−
1
)
(
−
5
)
=
18
+
2
(
−
5
)
=
18
−
10
=
8
Therefore, the missing terms are 18 and 8 respectively.
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nth Term of an AP
Standard X Mathematics
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