Sequences and Series
Let a1,a2,a3,?a10are in G.P. if a1a3=25 then a5a9 is equal to (A) 54 (B) 4.54 (C) 4.53 (D) 53
If (x1,y1) and (x2,y2) and ends of a focal chord of the parabola y2=4ax, then square of G.M. of x1 and x2 is?
For three number a, b, c product of the average of the number a2, b2, c2 and a21, b21, c21 can not be less than
I: The real number x when added to its inverse gives the minimum positive value of the sum at x = 1
II: If product of the two positive numbers is 400, then the minimum value of their sum is 20
which of the above statements are true