The document presents probability-related questions involving the sum of two dice being odd. It also includes a probability distribution for random variables and seeks the value of a given expression involving positive integers. Options for answers are provided for each question.

1. Grade 12
Easy

2. Two fair dice are rolled. What is the
probability of obtaining an odd sum?
A. 1 b. c. d.

3. The probability distribution has the random
variables 0, 1 and 2. The probabilities of
random variables 0 and 1 are both . What is
the probability of the random variable 2?
a. b. c. d. 1

4. Find the value of .
a. 3 b. 2 c. d.

5. Suppose and are positive integers, such that ,
what is the value of
a. 9 b. 7 c. 12 d. 6