• A. 2
• B. 3
• C. 4
• D. 1

Answer: Option C

Explanation:

• A. $\frac{20}{3}$
• B. $\frac{10}{3}$
• C. $\frac{-10}{3}$
• D. $-\frac{20}{3}$

Answer: Option D

Explanation:

• A. 1
• C. 2
• D. 10

Answer: Option A

Explanation:

• A. $0$
• B. $p+q$
• C. $q+r$
• D. $1$

Answer: Option D

Explanation:

• A. $p+q$
• B. $\frac{pq}{p+q}$
• C. $pq$
• D. $\frac{p+q}{pq}$

Answer: Option B

Explanation:

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

Answer: Option B

Explanation:

• A. $x^p$
• B. $x^m$
• C. $x^l$
• D. $1$

Answer: Option D

Explanation:

• A. 1
• B. a+b+c
• D. ab + bc + ca

Answer: Option C

Explanation:

• A. $ax+by+a^2=0$
• B. $ax+by=a^2$
• C. $ax-by=a^2$
• D. $by-ax=a^2$

Answer: Option C

Explanation:

• A. $a+b$
• B. $\frac{ab}{a+b}$
• C. $ab$
• D. $\frac{a+b}{ab}$

Answer: Option B

Explanation:

• A. ab
• B. a
• C. b
• D. a/b

Answer: Option A

Explanation:

• A. ab
• B. a
• C. b
• D. a/b

Answer: Option A

Explanation:

• A. ab
• B. a
• C. b
• D. a/b

Answer: Option A

Explanation:

• A. ab
• B. a
• C. b
• D. $\frac{a}{b}$

Answer: Option A

Explanation:

• A. $xz>yz$
• B. $\frac{x}{z}>\frac{y}{z}$
• C. $\frac{z}{x}>\frac{z}{y}$
• D. $xz<yz$

Answer: Option D

Explanation: