If `|vec(a)`| = 4 and `-3 le lamda le 2`,then I`lambda veca`I lies in
(A) [0,12]
(B) [2,3]
(C) [8,12]
(D) [-12,8]

If I vec(a) I = 4 and -3 le lamda le 2 ,then I lambda vec(a) I lies in (A) [0,12] (B) [2,3] (C) [8,12] (D) [-12,8]

If |z-4+3i|le3, then the least value of |z|= (A) 2 (B) 3 (C) 4 (D) 5

If |z-4+3i|le3, then the least value of |z|= (A) 2 (B) 3 (C) 4 (D) 5

If 2x+y+lambda=0 is a normal to the parabola y^2=-8x , then lambda is (a)12 (b) -12 (c) 24 (d) -24

If |veca|=8,|vecb| = 3 and |veca xxvecb|=12 , find veca.vecb

If |vec(a) | = 8 , | vec(b) =3 and | vec( a) xx vec( b) |=12 , then the value of vec( a). vec(b) is a) 12√3 only b) -12√3 only c) 12√3 or -12√3 d) none of these

The discriminant of the quadratic equation 4x^2 - 6x +3 = 0 is (A) 12 (B) 84 (C) 2 sqrt3 (D) -12

The discriminant of the quadratic equation 4x^2 - 6x +3 = 0 is (A) 12 (B) 84 (C) 2 sqrt3 (D) -12

If veca and vec b are non-zero, non-collinear vectors such that |veca|=2, veca*vecb=1 and angle between veca and vec b is (pi)/(3) . If vecr is any vector such that vecr*veca=2, vecr*vecb=8, (vec r+2veca-10vecb)*(vecaxxvecb)=4sqrt(3) and satisfy to vecr+2veca-10vecb=lambda(veca xx vec b) , then lambda is equal to : (a) 1/2 (b) 2 (c) 1/4 (d) none of these

Number of vertices of a cuboid is (a) 4 (b) 6 (c) 8 (d) 12