• A. $\left(a-4\right)$
• B. $\left(a-1\right)$
• C. $\left(a-6\right)$
• D. ${\left(a-1\right)}^2$

Answer: Option B

Explanation:

• A. $4$
• B. $3$
• C. $2$
• D. $1$

Answer: Option D

Explanation:

• A. 3/10
• B. 1/3
• C. 10
• D. 10/3

Answer: Option C

Explanation:

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

Answer: Option C

Explanation:

• A. -1
• C. 1
• D. 2

Answer: Option A

Explanation:

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

Answer: Option B

Explanation:

• A. সমস্ত বাস্তব সংখ্যা
• B. -১ বাদে সমস্ত বাস্তব সংখ্যা
• C. ০ বাদে সমস্ত বাস্তব সংখ্যা
• D. ১ বাদে সমস্ত বাস্তব সংখ্যা

Answer: Option C

Explanation:

• A. $1$
• B. $2$
• C. $-2$
• D. $4$

Answer: Option B

Explanation:

• A. $\frac{d^{3}y}{d{x}^3}=0$
• B. $\frac{d^{2}y}{d{x}^2}+2a=0$
• C. $\frac{dy}{dx}+2ax-b=0$
• D. $\frac{d^{3}y}{d{x}^2}+\frac{d^{2}y}{d{x}^2}+\frac{dy}{dx}-2ay=0$

Answer: Option C

Explanation:

• A. 2
• B. 5
• C. 6
• D. 8

Answer: Option A

Explanation:

• A. ১৭
• B. ১৮
• C. ১৯
• D. ২০

Answer: Option B

Explanation:

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

Answer: Option A

Explanation:

• A. 39
• B. 45
• C. 18
• D. 35

Answer: Option A

Explanation:

• A. $\frac{y}{4}\tan x$
• B. $\frac{y}{2}\tan x$
• C. $\frac{y^2}{2}\tan x$
• D. $\frac{y}{2}{\tan }^{2}x$

Answer: Option B

Explanation:

• A. $\frac{1+y}{y}$
• B. $\frac{y}{1+y}$
• C. $\frac{y}{1-y}$
• D. $\frac{1-y}{y}$

Answer: Option B

Explanation: