The point of intersection of the straight lines and is
(- 3, - 4, - 5)
(- 3, 4, 5)
(- 3, 4, - 5)
(3, - 4, 5)
The straight line is parallel to the plane . Then, the distance between the straight line and the plane is
Two fair dice are rolled. Then, the probability of getting a composite number as the sum of face values is equal to
A.
If two dice are rolled total sample space = (6)2 = 36
Sum of face values can be a composite number.
Sum = 4, 6, 8, 9, 10, 12
Number of favourable cases
(1, 3), (3, 1), (2, 2), (3, 3), (2, 4), (4, 2), (5, 1), (1, 5), (2, 6), (6, 2), (5, 3), (3, 5), (4, 4), (3, 6), (6, 3), (4, 5), (5, 4), (4, 6), (6, 4), (5, 5), (6, 6) = 21
Hence, required probability
=