the sum of 20 terms of series√3+√12+√27 is
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1
Answer:
Given
3
,
12
,
27
⇒
3
,
4×3
,
9×3
⇒
3
,2
3
,3
3
are in A.P.
where a=
3
and d=2
3
−
3
=
3
∴ the fourth term is T
4
=a+3d=
3
+3×
3
=4
3
=
16×3
=
48
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