Which term of the progression 0.004,0.02,0.1,… is 12.5?

Which term of the progression 18 ,-12 ,8, i s(512)/(729)?

(a) Which term of the progression 4 + 8 + 12 + ... is 76 ? (b) Which term of the progression 36 + 33 + 30 + ... is zero ? (c) Which term of the progression (3)/(4)+1+(5)/(4)+..." is "12?

Which term of the progression 19, 18(1)/(5), 17 (2)/(5) ,..... is the first negative term?

(a) Which term of the progression 10,9(1)/(3),8 (2)/(3), ...is the first negative term ? (b) Which term of the progression 4,3(5)/(7),3(3)/(7), ...is the first negative term ?

Which term of the series 8+1.6+ 0.32 + ... is 0.00256 ?

Find the sum to indicated number of terms in each of the geometric progressions : 0.15, 0.015, 0.0015, . . . , 20 terms.

Which term of the series 8+1.6+0.32+ . . . . is 0.00256 ?

How many terms are there in the G.P. 0.03, 0.06, 0.12 , ….., 3.84?

Find the sum of 7 terms of the series 2+0.2+0.02+….

Find the sum of the first n terms of the series: 0.2 + 0.22 + 0.222+ ....n - terms