The sum of 20 terms of the series √√3+√√12+√27... is -
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Answer:
3
+
12
+
27
+
48
+⋯+
300
=
3
+2
3
+3
3
+4
3
+⋯+10
3
=
3
(1+2+3+4+⋯+10)
=
3
(
2
10×11
)=55
3
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