If line joining points A and B having position vectors 6a - 4b + 4c and - 4c respectively and the line joining the points C and 0 having position vectors - a - 2b - 3c and a + 2b - 5c intersect, then point of intersection is
B
C
D
A
Direction ratios of the line which is perpendicular to the lines with direction ratios - 1, 2, 2 and 0, 2, 1 are
1, 1, 2
2, - 1, 2
- 2, 1, 2
2, 1, - 2
If random variable , then P(2 < X < 4) is equal to
B.
The objective function Z = x1 + x2, subject to the constraints are x1 + x2 10, - 2x1 + 3x2 15, x1 6, x1x2 0 has maximum value of _ the feasible region.
at only one point
at only two points
at every point of the segment joining two points
at every point of the line joining two points equivalent to