If three successive terms in the expansion of have their coefficients in the ratio 6 : 33 : 110, then n is equal to
The number of terms common to the two A.P.s 2 , 5 , 8 , 11 … , 98 and 3 , 8, 13 , 18, 23 , … , 198
the given data in ascending order is
Since the line is equally inclined the slope of the line should be -1, because it makes 1350 in the positive direction of the X axis
This implies the equation of the line is y= -x +c
i.e; x+y - c =0
distance of the line from the origin is given as
Therefore =
This implies c = 2
Hence the equation of the line is x+y=2
= 2a/3
Hence = 1/3. Hence e2 = 1- = 1 - (1/3) = 2/3
Therefore e =