Properties of A.P

The sum of the first three terms of an A.P. is 36 while their product is 1620. Find the A.P.

Introduction || Sequence || Series || Progression || Arithmatic Progression (A.P.) || A.P.terminologies || Consecutive terms OF A.P. || General apperence OF A.P. || Common difference OF A.P. Condition for a sequence to be A.P

Introduction OF Sequence and Series and A.P || Formation OF A.P and General term OF A.P

If a,b,c are in G.P and a,p,q are in A.P such that 2a, b+p, c +q are in G.P ., then the common difference of A.P is

If sum of first 20 terms of an A.P. is equal to sum of first 30 terms of the A.P. then sum of the first 50 terms of the A.P. is

the A.P. nth term of an A.P. is given by (-4n+15). Find the sum of first 20 terms of A.P.

If the solutions for theta of cos p theta+cos q theta=0,p>q>0 are in A.P then numerically smallest common differece of A.P is

If p ,q ,a n dr are in A.P., then which of the following is/are true? pth, qth, and rth terms of A.P. are in A.P. pth, qth, rth terms of G.P. are in G.P. pth, qth, rth terms of H.P., are in H.P. none of these