Arithmetic Progressions Quiz 2

Which term of the G.P. $\frac{1}{3},\frac{1}{9},\frac{1}{27},........$ is  $\frac{1}{2187}$

The $21^{st}$ term of an A.P., whose first two terms are -3 and 4 is ………

The common difference of an A.P. for which $a_{18} - a_{14}$ = 32 is ………

In an A.P., if a = 1, $a_n = 20$ and $S_n = 399$ then n = …………

Which term of G.P. $3, 3 \sqrt3,9,.......$ equals to 243?

If x, x + 2, x + 6 are three consecutive terms in G.P, find the value of ‘x’.

If $a_n = \frac{n(n+3)}{n+2}$ then find $a_{17}$ = ............

The sum of first 100 natural numbers is …………

If a, b, c are in G.P., then b = ………

Which term of the A.P -18, -16, -14, ………. is first positive term ?