If `|(x , 1),(1,x)| = |(2 , 0),(8,4)|` then value of `x` is:
(a) `pm 3`
(b) `pm2`
(c) `pm4`
(d) 0

If 1/x+2/3= 1/(2x)+3/4 then the value of x is A) 2 B) 8 C) 6 D) 4

The value(s) of k for which the quadratic equation 2x^2 + kx + 2 = 0 has equal roots, is (a) 4 (b) pm 4 (c) -4 (d) 0

The graph between object distance u and image distance v for a lens is given below. The focal length of the lens is. (a) 5 pm 0.1 (b) 5 pm 0.05 ( c) 0.5 pm 0.1 (d) 0.5 pm 0.05 . .

If : sin A + cos A =1, "then" :sin A - cos A = A) pm 1 B)0 C) pm 2 D) pm 3

If 3 sin x + 5 cos x=5, "then" : 5 sin x-3 cos x.... A) pm 2 B) pm 3 C) pm 4 D) pm 5

What will be the area of the rhombus ax pm by pm c = 0 ?

If sin^(3)x cos3x+cos^(3)x sin3x=(3)/(8), then the value of sin4x is (1)/(2)(b)1(c)-(1)/(2)(d)0

Find the equation of ellipse that satifies the given conditions: (a) Vertices (pm 6, 0) , foci (pm 4, 0 ) (b) Ends of major axis (0 , pm sqrt(5)) : ends of minor axis (pm 1, 0)

It is between 3 P.M. and 4 P.M. and the distance between the hour and the minute hand of clock is 18 minute spaces. What time does the clock show? (a) 3.12 P.M. (b) 3.27 P.M. (c) 3.31 P.M. (d) 3.36 P.M.