Write the formula of `n^(th)` term of G.P. and explain the terms in it.

Write the formula to find the volume of a cone and explain each term in it.

Write the formula for volume of sphere and explain all terms in it.

Write the lens maker's formula and explain the terms in it.

Write the formulae for the mean in deviation method and also, explain the terms in it.

Write the formula for finding number of terms in A.P

In the formula of n^(th) term of term of a Geometric Progression a_(n)=a cdot r^(n-1), r denotes ........

Write the formula to find curved surface area of a cone and explain each term in it.

In a G.P if the first term is 3, n^(th) term is 96 and the sum of n terms is 189, then the number of terms is

Determine the 18^(th) term of a G.P. whose 5^(th) term is 1 and common ratio is 2/3

If the seventh term of a G.P. is 27 and its 21^(st) term is 243, find its 14^(th) term.