Vector Algebra » Exercise - 15. The value of k for which the points A(1, 0, 3) , B(-1, 3,4) ,C(1, 2, 1) and D(k, 2, 5) are coplanar is : (a) 1 (b) 2 (c) 0 (d) -1
Vector Algebra » Exercise - 12. Let and be two unit vectors such that + is also a unit vector. Then the angle between and is : (a) 300 (b) 600 (c) 900 (d) 1200
Probability » Exercise - 111. If A & B are any two events, then the true relation is : (a) P (A ∩B) > P (A) + P (B) - 1 (b) P (A ∩B) < P (A) + P (B) (c) P (A ∩ B) = P (A) + P (B) − P (A ∪ B) (d) none of these
Vector Algebra » Exercise - 1 1. If , then equals : (a) 0 (b) 1 (c) 2a.b (d) none of these