• A. 1,2,3
• B. 6,8,10
• C. 2,4,6
• D. 4,7,10

Answer: Option D

Explanation:

• A. $\frac{7}{8}$
• B. $\frac{5}{6}$
• C. $\frac{3}{4}$
• D. $\frac{3}{5}$

Answer: Option D

Explanation:

• A. 30°
• B. 40°
• C. 55°
• D. 110°

Answer: Option C

Explanation:

• A. 3 cm
• B. 4 cm
• C. 5 cm
• D. 6 cm

Answer: Option D

Explanation:

• A. 3 সেমি
• B. 4 সেমি
• C. 5 সেমি
• D. 6 সেমি

Answer: Option D

Explanation:

• A. ৪৫°
• B. ৯০°
• C. ১১০°
• D. ১৮০°

Answer: Option B

Explanation:

• A. ৬২°
• B. ৪৫°
• C. ৩১°
• D. ৩৬°

Answer: Option C

Explanation:

• A. ৩০°
• B. ৪০°
• C. ৪৫°
• D. ৬০°

Answer: Option A

Explanation:

• A. $60°$
• B. $45°$
• C. $40°$
• D. $30°$

Answer: Option D

Explanation:

• A. 54°
• B. 72°
• C. 108°
• D. 126°

Answer: Option D

Explanation:

• A. ১৬
• B. ২১
• C. ২৩
• D. ২৬

Answer: Option D

Explanation:

• A. θ=nπ
• B. θ=(2n+1)π/2
• C. θ=2nπ
• D. θ=2nπ±α

Answer: Option A

Explanation:

• A. n(n + 1)
• B. n2
• C. 2n-1
• D. 2^n

Answer: Option D

Explanation:

• A. ${}^{n}C_2$
• B. $\frac{{}^{n}C_2}{2!}$
• C. ${}^{n}C_2-2$
• D. ${}^{n}C_2-n$

Answer: Option D

Explanation:

• A. 2
• B. –2
• C. -1
• D. 1

Answer: Option C

Explanation: