• A. $-7$
• B. $7$
• C. $0$
• D. $11$

Answer: Option C

Explanation:

• A. $\left\{7,9\right\}$
• B. $\left\{9\right\}$
• C. $\left\{7\right\}$
• D. $\theta$

Answer: Option C

Explanation:

• A. $\left\{1,2,4\right\}$
• B. $\left\{4,8,12\right\}$
• C. $\left\{0,4,8,12,16\right\}$
• D. $\left\{4,8,12,16\right\}$

Answer: Option D

Explanation:

• A. $1$
• B. $2$
• C. $-2$
• D. $4$

Answer: Option B

Explanation:

• A. $2$
• B. $1$
• C. $3$
• D. $5$

Answer: Option A

Explanation:

• A. $\frac{a+b}{2}$
• B. $\frac{ap+bq}{2}$
• C. $\frac{ap+bq}{p+q}$
• D. $\frac{ap+bq}{a+b}$

Answer: Option C

Explanation:

• A. $\frac{1}{4}$
• B. $\frac{1}{2}$
• C. $\frac{3}{4}$
• D. $1$

Answer: Option A

Explanation:

• A. $\left\{1\right\}$
• B. $R-\left\{\frac{3}{2}\right\}$
• C. $R-\left\{1,-1\right\}$
• D. $\left\{x\in R : x=not1\right\}$

Answer: Option D

Explanation:

• A. $\left\{\right\}$
• B. $\left\{0\right\}$
• C. $\left\{3\right\}$
• D. $\left\{0,\sqrt{3}\right\}$

Answer: Option D

Explanation:

• B. 4
• C. 8
• D. 16

Answer: Option C

Explanation:

• A. 3
• B. 0
• C. -3
• D. -3

Answer: Option C

Explanation:

• A. $A\cup B=B\cup A$
• B. $(A\cup B)\cup C=A\cup (B\cup C)$
• C. $(A\cap B)\text{'}=A\text{'}\cup B\text{'}$
• D. $A\cap B\text{'}=A-B$

Answer: Option C

Explanation:

• A. 8
• B. 7
• C. 6
• D. 3

Answer: Option A

Explanation:

• A. ১৮
• B. ২৪
• C. ৩৫
• D. ৪২

Answer: Option B

Explanation:

• A. a
• B. 1
• C. a-1
• D. a + 1

Answer: Option D

Explanation: