Middle term || Ratio OF terms || Total no. OF terms || Greatest coefficient || (r+1)th term from beginning and End and Illustration

n^(th) term of an AP from the end

The sum of the binomial coefficients of the 3^(rd),4^(th) terms from the beginning and from the end of (a+x)^(n) is 440 then n=

In a A.P & an H.P have the same first term, the same last term & the same number of terms; prove that the product of the r^(th) term from the beginning in one series & the r^(th) term from the end in the other is independent of r.

If an A.P.consists of n terms with first term a and n^(th) term l then show that the sum of the m^(th) term from the beginning and the m^(th) term from the end is (a+l) .

In the expansion of (1+x)^(n) the coefficients of terms equidistant from the beginning and the end are equal.

Ratio of Consecutive Terms & coefficients.

Middle Terms || Sum OF Coefficient || Sum OF Combinatorial Coefficient || Theory OF Numerically Greatest Term

The first and the last terms of an A.P.are a and l respectively.Show that the sum of nth term from the beginning and nth term from the end is a+l

Numerically Greatest term & illustration || Questions based on finding coefficient and To find rth term from end