• A. $\frac{২}{৩}$
• B. $\frac{১৩}{১৫}$
• C. $\frac{৪}{৫}$
• D. $\frac{২৩}{৩০}$

Answer: Option B

Explanation:

• A. $\frac{x+p}{y+q}$
• B. $\frac{x+p}{{\displaystyle \frac{x}{y}}+{\displaystyle \frac{p}{q}}}$
• C. $\frac{xy+pq}{y+q}$
• D. $\frac{xy+pq}{{\displaystyle \frac{x}{y}}+{\displaystyle \frac{p}{q}}}$

Answer: Option B

Explanation:

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

Answer: Option D

Explanation:

• A. $\frac{১}{২}$
• B. $\frac{১}{৩}$
• C. $\frac{৩}{৪}$
• D. ১ বার

Answer: Option C

Explanation:

• A. $\frac{১}{৩}$
• B. $\frac{৩}{৭}$
• C. $\frac{২}{৫}$
• D. $\frac{৪}{৯}$

Answer: Option A

Explanation:

• A. $N^2$
• B. 2N+1
• C. N
• D. 2N-1

Answer: Option A

Explanation:

• A. $\frac{১}{২}\times$ভূমি × উচ্চতা
• B. $\frac{১}{২}\times$কর্ণদ্বয়ের গুণফল
• C. $\frac{১}{২}\times$(কর্ণদ্বয়ের যোগফল)
• D. দৈর্ঘ্য × প্রস্থ

Answer: Option B

Explanation:

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

Answer: Option A

Explanation:

• A. $\frac{৯}{১০০}$
• B. $\frac{৯}{১০০০}$
• C. $০.০০৯৯$
• D. $০.১০০$

Answer: Option D

Explanation:

• A. $a^2-b^2=\left(a+b\right)\left(a-b\right)$
• B. $a^2+b^2={\left(a+b\right)}^2 -2ab$
• C. $a^2+b^2={\left(a-b\right)}^2 +2ab$
• D. ${\left(a+b\right)}^2={\left(a-b\right)}^2 +4ab$

Answer: Option C

Explanation:

• A. $\frac{৪}{৭}$
• B. $\frac{৫}{৮}$
• C. $\frac{৭}{১১}$
• D. $\frac{২}{৩}$

Answer: Option D

Explanation:

• A. $\frac{১}{১০০০০০}$
• B. $\frac{১}{১০০০০}$
• C. $\frac{১}{১০০০}$
• D. $\frac{১}{১০০০০০০}$

Answer: Option D

Explanation:

• A. $\frac{1}{3}$
• B. $\frac{3}{6}$
• C. $\frac{2}{7}$
• D. $\frac{5}{21}$

Answer: Option D

Explanation:

• A. $\frac{p+q-q}{pqr}$
• B. $\frac{pq+pr-pq}{pqr}$
• C. $\frac{pq+qr-pr}{pqr}$
• D. $\frac{pqr}{qr+pr-pq}$

Answer: Option D

Explanation:

• A. V = 4 πrh
• B. $V={\mathrm{\pi r}}^2\mathrm{h}$
• C. V = 4 πrh
• D. $V=2{\mathrm{\pi r}}^2\mathrm{h}$

Answer: Option B

Explanation: