• A. $y:x$
• B. $y:\frac{1}{x}$
• C. $\sqrt{x}:\sqrt{y}$
• D. $\frac{1}{x}:\frac{1}{y}$

Answer: Option A

Explanation:

• A. 18
• B. 16
• C. 14
• D. 22

Answer: Option A

Explanation:

• A. $0$
• B. $2$
• C. $3$
• D. $-1$

Answer: Option C

Explanation:

• A. $\frac{n\left(n+1\right)}{2}$
• B. $\frac{n^2\left(n+1\right)}{4}$
• C. $n^2$
• D. $\frac{n\left(n+1\right)\left(n+2\right)}{6}$

Answer: Option A

Explanation:

• A. 9
• B. 10
• C. 12
• D. 16

Answer: Option C

Explanation:

• A. $16$
• B. $20$
• C. $48$
• D. $18$

Answer: Option D

Explanation:

• A. 18
• B. 30
• C. 36
• D. 54

Answer: Option C

Explanation:

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

Answer: Option B

Explanation:

• A. 30
• B. 31
• C. 32
• D. 34

Answer: Option D

Explanation:

• A. $১৮০°$
• B. $১২০°$
• C. $৬০°$
• D. $৩০°$

Answer: Option B

Explanation:

• A. $\frac{5}{12}$
• B. $\frac{12}{5}$
• C. $\frac{13}{5}$
• D. $\frac{13}{5}$

Answer: Option C

Explanation:

• A. $৩০$বছর
• B. $৩৬$বছর
• C. $৩৮$বছর
• D. $৩১\frac{১}{২}$বছর

Answer: Option B

Explanation:

• A. $x+y+1$
• B. $x-y$
• C. $x+y-1$
• D. $x-y-1$

Answer: Option C

Explanation:

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

Answer: Option A

Explanation:

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

Answer: Option A

Explanation: