If `4a^2+9b^2-c^2+12ab= 0` then the family of straight lines `ax + by +c=0` is concurrent at : (A) `(-3,2) or (2,3)` (B) `(-2,3) or (2,-3)` (C) `(3,2) or (-3,-2)` (D) `(2,3) or (-2,-3)`

Factorise a ^(3) - 3a^(2) b + 3ab ^(2) -b ^(3)

The arrangement of the nuclei in a normal embryosac in the dicot plant is (A) 2 +4 + 2 (B) 3 + 2 + 3 (C) 2 + 3 + 3 (D) 3 + 3 +2

The value of sin^(-1)(-sqrt(3)/2)\ is: (A) (-pi)/3 (B) (-2pi)/3 (C) (4pi)/3 (D) (5pi)/3

Match the following list of animals with their level of organisation. (A) (a - 2), (b - 3), (C-4), (d - 1) (B) (a - 2), (b - 4), (C-3), (d - 1) (C) (a - 4), (b - 1), (C-2), (d - 3) (D) (a - 1), (b - 4), (C-3), (d - 2)

In a Delta ABC, c cos ^(2)""(A)/(2) + a cos ^(2) ""(C ) /(2)=(3b)/(2), then a,b,c are in

Find the area of quadrilateral ABCD with vertices A(-4, -2), B(-3, -5), C(3,-2) and D(2,3).

If |3^2+k4^2 3^2+3+k4^2+k5^2 4^2+4+k5^2+k6^2 5^2+5+k|=0 then the value of k is- a. 2 b.1 c.-1 d. 0

Expand (4a-2b-3c)^(2) .

If A= {1, 2, 3}, B= {3, 4} and C= {4, 5, 6}, then (A xx B) uu (A xx C) = {(1, 3), (1,4), (1,5), (1,6), (2,3), (2,4), (2,5), (2,6), (3,3), (3,4), (3,5),(3,6)}

The number of solutions of (log)_4(x-1)=(log)_2(x-3) is (2001, 2M) (a) 3 (b)1 (c) 2 (d) 0