" Sthe sum of two middle most terms of the "AP-(4)/(3),-1,(-2)/(3),...,4(1)/(3)

Find the sum of two middle most terms of the AP -(4)/3,-1,-(2)/3,.....4(1)/3

Find the sum of two middle terms of the AP -(4)/(3),-1,-(2)/(3),-(1)/(3),...,4((1)/(3))

Find the sum of two middle terms of the AP -4/3,-1,-2/3,-1/3,...,4(1/3)

Find the value of the middle most term of AP: -11,-7,-3,...,49

Find the sum to 81 terms of the AP-1, 1/4 , 3/2 ,……

FInd the sum of infinite terms of the series (1)/(1.2.3)+(1)/(2.3.4)+(1)/(3.4.5)....

Find the sum of: 24 terms and n terms of 2 (1)/(2) , 3 (1)/(3) , 4 (1)/(6) ,5 ,......,

If the sum of the first 15 terms of the series ((3)/(4))^(3)+(1(1)/(2))^(3)+(2(1)/(4))^(3)+3^(3)+(3(3)/(4))^(3)+... is equal to 225k, then k is equal to

If the sum of the first 15 terms of the series ((3)/(4))^(3)+(1(1)/(2))^(3)+(2(1)/(4))^(3)+3^(3)+(3(3)/(4))^(3)+... is equal to 225k, then k is equal to