[" How many tems of the geometric series "1+4+16+64+..." will make the sum "5461?(A)6(B)" 7(C) "8],[" (D) "9]

How many terms of the geometric series 1+4+16+64+... will make the sum 5461

How many terms of the geometric series 1+4+16+64+ will make the sum 5461 ?

How many terms of the geometric series 1 + 4 + 16 + 64 + ……… will make the sum 5461?

How many terms of the series 1+4 +16+. ... make the sum 1365?

(A) 7 (B) 8 (C) 6 (D) 9

How many terms of the geometric progression 1+4+16+64+ . . . . .. . . must be added to get sum equal to 5461 ?

How many terms of the series 64+32+16+8+… must be taken so that the sum may be 127(1)/(2) ?

Obtain the sum of the series 1/4+1/16+1/64 ……………….to oo

The geometric mean of the series 1,2,4,8,16,....,2^n is

Find the sum of a geometric series in which a=16 , r=(1)/(4) ,l = (1)/(64) .