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Chapter 5
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Sum of the first n terms of an AP
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Quiz
Class X
Quick check : Sum of n terms
6 questions
Question 1 of 6
Score:
0
/ 0
S
n
=
n
/
2
[
2
a
+
(
n
−
1
)
d
]
S_n = n/2 [2a + (n-1)d]
S
n
=
n
/2
[
2
a
+
(
n
−
1
)
d
]
. For
a
=
1
,
d
=
4
,
n
=
10
a = 1, d = 4, n = 10
a
=
1
,
d
=
4
,
n
=
10
:
A
200
200
200
B
190
190
190
C
180
180
180
D
220
220
220
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