• A. 25°
• B. 30°
• C. 40°
• D. 50°

Answer: Option B

Explanation:

• A. $\left(x-y-1\right)\left(x-y+1\right)$
• B. $\left(x-y+1\right)\left(x+y-1\right)$
• C. $\left(x+y+1\right)\left(x-y-1\right)$
• D. $\left(x-y\right)\left(x+y+1\right)$

Answer: Option B

Explanation:

• A. 2
• B. 3
• C. 1
• D. 4

Answer: Option C

Explanation:

• A. 52
• B. 46
• C. 26
• D. 22

Answer: Option C

Explanation:

• A. 20 °
• B. $22\frac{1}{2}°$
• C. 23 °
• D. $23\frac{1}{2}°$

Answer: Option B

Explanation:

• A. ১/৩ অংশ
• B. ২/৩ অংশ
• C. ১/৪ অংশ
• D. ৩/৪ অংশ

Answer: Option A

Explanation:

• A. $\sqrt[3]{243}$
• B. $\sqrt[3]{343}$
• C. $\sqrt[3]{392}$
• D. $\sqrt[3]{676}$

Answer: Option B

Explanation:

• A. 3
• B. -3
• C. 2
• D. -2

Answer: Option B

Explanation:

• A. {3,2}
• B. {-3,2}
• C. ∅
• D. কোনোটিই নয়

Answer: Option C

Explanation:

• A. a>0
• B. a ≠ 1
• C. a ≠ 0 , a > 1
• D. a > 0 , a ≠ 1

Answer: Option D

Explanation:

• A. x + y
• B. x − y
• D. 1

Answer: Option D

Explanation:

• A. 1
• B. 2
• C. -1
• D. -2

Answer: Option B

Explanation:

• A. $\frac{\sqrt{3}}{2}{a}^2$
• B. $\frac{2}{3}{a}^2$
• C. $\frac{2}{\sqrt{3}}{a}^2$
• D. $\frac{\sqrt{3}}{4}{a}^2$

Answer: Option D

Explanation:

• A. ৩০
• B. ২৪
• C. ৩৬
• D. ৪২

Answer: Option B

Explanation:

• A. ০.০০১
• B. ০.০১
• C. ০.১
• D. ১

Answer: Option C

Explanation: