• A. 2x4 + 1
• B. 2x2x4 - 1
• C. 2x2x4 + 1
• D. 2x4 - 1

Answer: Option D

Explanation:

• A. $a^2+b^2$
• B. $a^2-b^2$
• C. ${(a+b)}^3$
• D. ${(a-b)}^3$

Answer: Option D

Explanation:

• A. 16
• B. 14
• C. 18
• D. 20

Answer: Option B

Explanation:

• A. 45°
• B. 55°
• C. 60°
• D. 90°

Answer: Option C

Explanation:

• A. 13.25
• B. 131.25
• C. 150
• D. 156.25

Answer: Option D

Explanation:

• A. 35°
• B. 235°
• C. 145°
• D. 55°

Answer: Option D

Explanation:

• A. $20$
• B. $40$
• C. $60$
• D. $80$

Answer: Option B

Explanation:

• A. 1
• B. 00
• C. 2
• D. 1/2

Answer: Option A

Explanation:

• A. $x<1,x>4$
• B. $x>1,x>4$
• C. $x<1,x<4$
• D. $1$

Answer: Option A

Explanation:

• A. 252
• B. 792
• C. 224
• D. 120

Answer: Option D

Explanation:

• A. n(n + 1)2
• B. n(n + 1)(2n + 1)6
• C. n(n + 1)3
• D. {n(n+1)/2}2

Answer: Option D

Explanation:

• A. 15 cm
• B. 12 cm
• C. 13 cm
• D. 24 cm

Answer: Option D

Explanation:

• A. 3
• B. 4
• C. 5
• D. 6

Answer: Option C

Explanation:

• A. সমবাহু
• B. সমদ্বিবাহু
• C. সমকোণী
• D. সূক্ষ্মকোণী

Answer: Option C

Explanation:

• A. সমবাহু
• B. সমদ্বিবাহু
• C. সমকোণী
• D. সূক্ষকোণী

Answer: Option C

Explanation: