**Q2: **

Which of the following is true?

- A
- B

**Q3: **

Given that the set of digits of 7β233, find the value of .

**Q4: **

If , what are the possible values of ?

- A can be any number other than 47.
- B20 or 18 or 9
- C9
- D can be any number other than 20, 18, and 9.

**Q5: **

Given that , find the value of .

**Q6: **

Given that , find the value of .

**Q7: **

Which of the following is true?

- A
- B
- C

**Q8: **

Use or to complete the following: .

- A
- B

**Q9: **

Pick the true statement.

- A
- B
- C
- D

**Q10: **

, , and is the set of digits of the number 547. which statement is correct?

- A ,
- B ,
- C ,
- D ,

**Q11: **

If , what are the possible values of ?

- A6
- B6 or 5
- C can be any number other than 11.
- D can be any number other than 6 or 5.
- E can be any number other than 1.

**Q12: **

Use or to fill in the gap: the set of odd numbers.

- A
- B

**Q13: **

Use or to fill in the gap: .

- A
- B

**Q14: **

Fill in the blank using or : .

- A
- B

**Q15: **

Given that and , find the value of .

- A
- B
- C or
- D
- E or

**Q16: **

Pick the true statement.

- A
- B
- C
- D

**Q18: **

Use or to fill in the gap: .

- A
- B

**Q19: **

Use or to fill in the gap: If and , then .

- A
- B

**Q20: **

Given that , find the value of .

- A127
- B28
- C271
- D1 or 27
- E127 or 271

**Q21: **

Use or to fill in the gap:

- A
- B

**Q22: **

Find all the subsets of the set of the letters of .

- A , ,
- B , ,
- C , , ,
- D , , ,
- E , , , , ,

**Q23: **

Given that , find all its subsets.

- A ,
- B , ,
- C ,
- D ,

**Q24: **

Given that , what are the possible values for and ?

- A ,
- B or ,
- C ,
- D or ,

**Q25: **

Find a subset of .

- A
- B
- C
- D