Mathematics – Class 12 Practice Test 9

1. A plane and a line having an angle of 90 degrees between them are called _____

2. Find which of the following is a Continuous random variable?

3. A month has atmost 31days, X = Number of days in a month, is X a discrete random variable?

4. Which of this represents the multiplication theorem of probability?

5. Find the angle between x + 2y + 7z + 2 = 0 and (2, 4, 6).

6. A box contains 5 brown and 7 black pebbles. What is the probability of drawing a brown pebble if the first pebble drawn is black? The balls drawn are not replaced in the box.

7. Given that E and F are events such that P(E) = 0.6, P(F) = 0.3 and P(E∩F) = 0.2, then P(E|F) ?

8. Let X be the random variable, P(X=x) is the Probability mass function is given by

Find the value of F(1)

9. What is the probability of picking an ace from a pack of cards?

10. Method in which the previously calculated probabilities are revised with values of new probability is called __________