Take any Arithmetic Progression.

The interior angles of a polygon are in arithmetic progression. The smallest angle is 120^@ and the common difference is 5^@ . Find the number of sides of the polygon.

The sum of three numbers in GP. is 56. If we subtract 1, 7, 21 from these numbers in that order, we obtain an arithmetic progression. Find the numbers.

The sum of three numbers in G.P. is 56. If we subtract 1, 7, 21 from these numbers in that order, we obtain an arithmetic progression. Find the numbers.

If 3 tickets are drawn randomly from 2n tickets numbered 1, 2, 3,………,2n, find the probability that the numbers on the chosen tickets are in arithmetic progression.

Which of these are Arithmetic Progressions and why? (a) 2,3,5,7,8,10,15,…….. (ii) 2,5,7,10,12,15,…….. ( c) -1,-3,-5,-7 ,………

If sin A/sin C=sin(A-B)/sin(B-C) then show that a^2,b^2,c^2 are in arithmetic progression

If a, b, c be in Arithmetic progression, then, then value of (a+2b-c)(2b+c-a)(a+2b+c) is

If a, b, c are in arithmetic progression, then the roots of the equation ax^2-2bx+c=0 are

If log_(l)x,log_(m)x and log_(n)x are in arithmetic progression show that , log n^(2) = log (ln) log_(l)m

Let the coefficients of powers of x in the 2nd ,3rd and 4th terms in the expansion of (1+x)^(n) ,where n is a positive integer ,be in arithmetic progression .Then the sum of the cofficients of odd powers of x in the expansion is-