Find the sum of the series `32,16,8,4.......`upto infinity.

Find the sum of the series,1.3.4+5.7.89.11.12+...... upto n terms.

Find the sum of the series : 3,-4,(16)/(3),... to 2n terms.

Find the sum of the series 1+3x+5x^(2)+7x^(3)+...... upto n terms.

The sum of the series 1+2x+3x^(2)+4x^(3)+... upto infinity when x lies between 0 and 1 i.e.,0

Find the sum of the following series to infinity: 10-9+8.1-7.29+oo

Find the sum of the series 1*2*3+2*3*4+3*4*5+"...." " upto n terms " .

Find the sum of the series upto infinite terms (3)/(4)-(5)/(4^(2))+(3)/(4^(3))-(5)/(4^(4))+...

The sum of the series 1/(2!)-1/(3!)+1/(4!)-... upto infinity is (1) e^(-2) (2) e^(-1) (3) e^(-1//2) (4) e^(1//2)