Find the sum `3(1)/(5)+4(3)/(5)+7(2)/(5)`

Find the sum: 4(3)/(5)+2(7)/(8)

Find the sum (1^2)/(2)+(3^2)/(2^2)+(5^2)/(2^3)+(7^2)/(2^4)+….oo

Find the sum (1^2)/2-(3^2)/(2^2)+(5^2)/(2^3)-(7^2)/(2^4)+....oodot

Find the sum (1^4)/(1xx3)+(2^4)/(3xx5)+(3^4)/(5xx7)+......+(n^4)/((2n-1)(2n+1))

Re- arrange suitably and find the sum: 5/3+(11)/2+\ (-9)/4+\ (-8)/3+\ (-7)/2

Find the sum of the series to n terms and to infinity : (1)/(1.3)+ (1)/(3.5) +(1)/(5.7) +(1)/(7.9)+...

Sum up to n terms the series 1-(2)/(5)+(3)/(5^(2))-(4)/(5^(3)) + ...

The sum to infinity of the series 1+(4)/(5)+(7)/(5^(2))+(10)/(5^(3))+ . . . , is

Evaluate the sum: 7/(10)+3/(5)

Find the sum : (i) 5/4 + ((-11)/(4)) , (ii) 5/3 + 3/5 , (iii) (-9)/(10) + 22/15 (iv) (-3)/(-11) + 5/9 , (v) (-8)/(19) + ((-2))/(57) , (vi) (-2)/(3) + 0 (vii) -2'1/3 + 4'3/5