How many terms of the A.P. ` 6`, `-(11)/2``,-5,dotdotdot`are needed to give the sum ` 25`?

How many terms of the A.P.6,-(11)/(2),-5,... are needed to give the sum 25?

How many terms of the A.P. -6,-(11)/(2),-5… are needed to give the sum -25?

How many terms of the G.P. 3, 3/2 ,3/4 "",""""dot""""dot""""dot are needed to give the sum (3069)/(512) ?

How many terms of the A.P.-6,-(11)/(2),-5 . are needed to give the sum-?

How many terms are there in A.P

How many term of the A.P. 15 , 12, 9 ., - are needed to give the sum 15 ? Explain the duble answer .

How many terms of the A.P. 16,14,12……….. are needed to given the sum 60 ? Explain why do we get two answers.

How many terms of the AP 18,16,14,12 ,….. Are needed to given the sum 78 ? Explain the double answer.

How many terms of the AP -15, -13, -11, … are needed to make the sum -55 ?