• A. ${\left(-1\right)}^{r}r{x}^r$
• B. $\left(r+1\right)x^{r+1}$
• C. $\left(r+1\right)x^r$
• D. ${\left(-1\right)}^r\left(r+1\right)x^r$

Answer: Option D

Explanation:

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

Answer: Option D

Explanation:

• A. 1106.8 m
• B. 1200 m
• C. 1650 m
• D. 550.50 m

Answer: Option A

Explanation:

• A. ১৫
• B. ২০
• C. ৪৫
• D. ৬০

Answer: Option A

Explanation:

• A. ৯৯/১৩
• B. ১৯/৩৯
• C. ৩১/২০
• D. ২০/৩২

Answer: Option B

Explanation:

• A. ২৫
• B. ৩৫
• C. ৪৫
• D. ৫৫

Answer: Option B

Explanation:

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

Answer: Option B

Explanation:

• A. 5
• B. 25
• C. -25
• D. -5

Answer: Option A

Explanation:

• A. 2
• B. 3
• C. 4
• D. 6

Answer: Option C

Explanation:

• A. $০°$
• B. $৯০°$
• C. $৪৫°$
• D. $১৮০°$

Answer: Option B

Explanation:

• A. ৯০ ডিগ্রী
• B. ১০৫ ডিগ্রী
• C. ১২০ ডিগ্রী
• D. ১৪৫ ডিগ্রী

Answer: Option C

Explanation:

• A. $d_1{d}_2$
• B. $\frac{1}{2}{d}_1{d}_2$
• C. $2d_1{d}_2$
• D. $4d_1{d}_2$

Answer: Option B

Explanation:

• B. 1
• C. 2
• D. 3

Answer: Option A

Explanation:

• A. $0°$
• B. $45°$
• C. $x\_90$
• D. $x°$

Answer: Option D

Explanation:

• A. $42°$
• B. $32°$
• C. $48°$
• D. $38°$

Answer: Option A

Explanation: