If [x] denotes the greatest integer less than or equal to x, then the value of the integral equals
For non-zero vectors a and b, if , then a and b are
collinear
perpendicular to each other
inclined at an acute angle
inclined at an obtuse angle
If A, B are two events such that then
None of the above
A.
C.
WE know,
As given,
So,