• A. $\frac{n}{2}$
• B. $\frac{n+1}{2}$
• C. $\frac{n+2}{2}$
• D. $n(n+1)$

Answer: Option B

Explanation:

• A. 8
• B. 9
• C. 27
• D. 15

Answer: Option B

Explanation:

• A. ৬
• B. ৭
• C. ৮
• D. ৯

Answer: Option B

Explanation:

• A. ১১/২০
• B. ১১/৮০
• C. ১/৮
• D. ১/৯

Answer: Option B

Explanation:

• A. $y^2=ax$
• B. $x^2+y^2=16$
• C. $ax+bx+c=0$
• D. $y^2=2x+7$

Answer: Option B

Explanation:

• A. $\frac{১}{৪৫}$
• B. $\frac{২}{৪৫}$
• C. $\frac{৭}{৪৫}$
• D. ৪৫

Answer: Option A

Explanation:

• A. ০
• B. ১
• C. ২
• D. ৩

Answer: Option A

Explanation:

• A. 10$\sqrt{3}$
• B. 15$\sqrt{3}$
• C. -10$\sqrt{2}$
• D. 10$\sqrt{2}$

Answer: Option D

Explanation:

• A. p/q
• B. pq
• C. pm/qn
• D. কোনোটিই নয়

Answer: Option D

Explanation:

• A. 1
• B. 2
• C. 4
• D. 7.52

Answer: Option D

Explanation:

• A. π
• B. 2π
• C. $\frac{2\mathrm{\pi }}{3}$

Answer: Option D

Explanation:

• A. 12
• B. 7
• C. 10
• D. 15

Answer: Option B

Explanation:

• A. $<A+<B-<C$
• B. $<A-<B-<C$
• C. $<A+<B$
• D. $<A+<C$

Answer: Option B

Explanation:

• A. $xy=\frac{{\left(x+y\right)}^2}{2}-\frac{{\left(x-y\right)}^2}{2}$
• B. $xy=\frac{{\left(x-y\right)}^2}{2}-\frac{{\left(x+y\right)}^2}{2}$
• C. $xy={\left(x+y\right)}^2-{\left(x-y\right)}^2$
• D. $xy=\left(\frac{{\left(x+y\right)}^2}{2}\right)-\left(\frac{{\left(x-y\right)}^2}{2}\right)$

Answer: Option D

Explanation:

• A. $\frac{2}{m}$
• B. $2m$
• C. $\frac{m}{2}$
• D. কোনোটিই নয়

Answer: Option A

Explanation: