Find the sum of the following series: `3/(sqrt5)+4/sqrt(5)+…` 25 terms

Find the sum of the following series : (i) 1,3,5,7... upto 12 terms.

Find the sum of the following geometric series: sqrt(7),sqrt(21),3sqrt(7),\ to\ n terms.

Find the sum of the following series: (sqrt(2)+1)+1(sqrt(2)-1)+.......+oo

Find the sum of the following series: 1+5+3+9+5+13+7+… 20 terms

Find the sum of the following series to infinity: 8+4sqrt(2)+4+ddotoo

Find the sum of the following series to n term: 1. 2. 5+2. 3. 6+3. 4. 7+..........

Find the sum of the following infinite series 1/2(1/5)^2+2/3(1/5)^3+3/4(1/5)^4+

Find the sum of the following geometric series: x^3, x^5, x^7, to\ n terms

Find the sum of the following series to infinity: 1+2//5+3//5^2\ +2//5^3+3//5^4+.....oo

Find the number of terms in the following expansions. ( sqrt(3) + sqrt(5) )^(7) ( sqrt(3) - sqrt(5) )^(7)