• 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:

• A. $4/3$
• B. $1/2$
• C. $2/3$
• D. $3/2$

Answer: Option B

Explanation:

• A. $\frac{n\left(n+1\right)}{2}$
• B. $\frac{n\left(n+1\right)\left(2n+1\right)}{6}$
• C. ${\left\{\frac{n\left(n+1\right)}{2}\right\}}^2$
• D. একটিও নয়

Answer: Option C

Explanation:

• A. $-\sqrt{3}$
• B. $9$
• C. $-9\sqrt{3}$
• D. $3\sqrt{3}$

Answer: Option D

Explanation:

• A. 728
• B. 286
• C. 364
• D. 1001

Answer: Option B

Explanation:

• A. 616
• B. 154
• C. 574
• D. 264

Answer: Option A

Explanation:

• A. 45%
• B. 50%
• C. 60%
• D. 75%

Answer: Option C

Explanation:

• A. 30
• B. 25
• C. 55
• D. 40

Answer: Option C

Explanation:

• A. 150 -x+z
• B. 150 -x-y+z
• C. 150-x+z
• D. 150-x-z

Answer: Option D

Explanation: