Thu June 28, 2012 By:

How an we find the nth term in Geometric Progressions not the tn or the last term?

Expert Reply
Thu June 28, 2012
The formula of findind any nth term in geometric progression (G.P) is given by :
tn=a= a *(rn-1)
here a is the first term of G.P  and r is the common ratio, tis the nth term.
now if you want to take out the value of 7th term then , using the same formula , we get
t7 = a7 = a * r7-1 = a * r
similarly any nth term can be find out using the above formula and if we know the number of total terms in G.P e.g n=10 , then we can use the above formula and find out t10 which would be the last term of G.P .

Ask the Expert