How many terms of the arithmetic series 24 21 18 15 g + + + + , be taken continuously so that their sum is – 351
Choices:
A) 26 B) 21 C) 9 D) 10 E) 17
In the given arithmetic series, a= 24 = d =-3 .   Sn = – 351   n/2(48-3n+3)=-351   n=26 or -9   hence, 26 terms needed to get sum -351   Option 26
<result>A</result>
How many terms of the arithmetic series 24 21 18 15 g + + + + , be taken continuously so that their sum is – 351