**Q3: **

Two distinct digits are chosen at random from the set . What is the probability that either of the digits is an odd number?

- A
- B
- C
- D
- E

**Q4: **

I write a two-digit number by randomly picking each digit from the set , where a digit can be repeated. Write the set of outcomes that is the event that the number is prime.

- A
- B
- C
- D
- E

**Q5: **

In an experiment a coin is flipped repeatedly until the first time it lands heads side up, or until it lands tails side up three times in a row. Determine the set for event , which is the appearance of at least two tails.

- A
- B
- C
- D
- E

**Q6: **

A bag contains 4 red balls and 6 brown balls. Which of the following represents the sample space of choosing a ball at random and recording its color?

- A{brown}
- B{red}
- C{red, red}
- D{red, brown}
- E{brown, brown}

**Q7: **

In an experiment a coin is repeatedly flipped until it lands head side up, or it lands tail side up three times in a row. Determine the set representing event , which is the appearance of at least one head.

- A
- B
- C
- D
- E

**Q8: **

Given that the sample space is the set of all 2-digit numbers whose digits are different and belong to , write the event that the number is odd.

- A
- B
- C
- D
- E

**Q9: **

What is the probability of choosing at random, two numbers which sum to 9, from the set ? You are allowed to pick the same number more than once.

- A
- B
- C
- D
- E

**Q10: **

In a random experiment, a ball is chosen at random from a box that contains four balls: one blue, one purple, one brown, and one white. List all the possible outcomes of this experiment.

- A{blue, white, gray, purple}
- B{blue, purple, brown}
- C{brown, white, purple}
- D{purple, blue, brown, white}
- E{purple, white, brown, orange}

**Q11: **

I write a two-digit number by randomly picking each digit from the set , where a digit can be repeated. What is the probability that the product of the two digits is 32?

- A
- B
- C
- D
- E

**Q12: **

In an experiment a coin is repeatedly flipped until it lands head side up or it lands tail side up three times in a row. Determine the subset of the experiment's sample space representing event , which is the appearance of at least two heads.

- A
- B
- C
- D
- E

**Q13: **

A bag contains 20 identical cards numbered 1 to 20. A card is selected at random, and the number written on it is recorded. Write the set representing event , where the recorded number, , satisfies the inequality .

- A
- B
- C
- D
- E

**Q14: **

Two separate regular dice are rolled, and the numbers on their upper faces noted. Write down the sample space of the event , which is the appearance of two numbers such that one of them is twice the other.

- A
- B
- C
- D
- E

**Q15: **

I write a two-digit number by randomly selecting two different digits from the set . Which of the following represents the event that there is an odd digit in the tens position?

- A
- B
- C
- D
- E

**Q16: **

Write, as a subset of the sample space, the event of rolling a number greater than 1 on a fair die.

- A
- B
- C
- D
- E

**Q17: **

A fair coin is flipped and and a fair dice is rolled. Which of the following represents the event of rolling a number which is divisible by 3?

- A
- B
- C
- D

**Q18: **

I write a two-digit number by randomly picking each digit from the set , where digits can be repeated. Which of the following is the event that the number is odd?

- A
- B
- C
- D
- E

**Q19: **

Which of the following denotes the sample space of selecting an even number between 39 and 52 at random?

- A
- B
- C
- D
- E

**Q20: **

Which of the following denotes the sample space of selecting an even number between 37 and 54 at random?

- A
- B
- C
- D
- E

**Q21: **

Which of the following is the definition of a sample space?

- A the set of some possible outcomes of a random experiment
- B one of the possible outcomes of a random experiment
- C the set of all the possible outcomes of a random experiment

**Q22: **

A fair coin is flipped and a fair die is rolled. Which of the following represents the event of the coin landing tail-side up and an even number on the die?

- A
- B
- C
- D

**Q23: **

Two fair dice are rolled. Which of the following represents the event of rolling the same number on both dice?

- A
- B
- C
- D

**Q24: **

Which of the following represents the sample space of flipping a coin and rolling a die?

- A
- B
- C
- D

**Q25: **

I write a two-digit number by randomly picking each digit from the set , where digits can be repeated. Write the set that represents the event that the number is divisible by 7.

- A
- B
- C
- D
- E