• A. 78.4
• B. 79.2
• C. 64
• D. 81.2

Answer: Option B

Explanation:

• A. a 2 = b
• B. b 2 = ac
• C. a b = b c
• D. a = b = c

Answer: Option B

Explanation:

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

Answer: Option A

Explanation:

• A. $a>0,a\not\equiv 1$
• B. $a<0,a\not\equiv 1$
• C. $a>1,a\not\equiv 0$
• D. $a<1,av0$

Answer: Option A

Explanation:

• A. $6$
• B. $8$
• C. $10$
• D. $12$

Answer: Option C

Explanation:

• A. $\frac{1}{25}$
• B. $-5$
• C. $\frac{1}{5}$
• D. $-\frac{1}{5}$

Answer: Option B

Explanation:

• A. $\frac{1}{2}\left(x-4\right)\left(x+2\right)$
• B. $\frac{1}{2}\left(x+4\right)\left(x-2\right)$
• C. $\frac{1}{2}\left(x+4\right)\left(x+2\right)$
• D. $\frac{1}{2}\left(x-4\right)\left(x-2\right)$

Answer: Option D

Explanation:

• A. 2
• B. 4
• C. -6
• D. -8

Answer: Option B

Explanation:

• A. $\sqrt{3}$
• B. $1$
• C. $2\sqrt{2}$
• D. $8$

Answer: Option B

Explanation:

• A. $3$
• B. $1$
• C. $0$
• D. $-1$

Answer: Option C

Explanation:

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

Answer: Option D

Explanation:

• A. $4$
• B. $2$
• C. $-2$
• D. $-4$

Answer: Option A

Explanation:

• A. 1365 টাকা
• B. 1375 টাকা
• C. 1395 টাকা
• D. 1410 টাকা

Answer: Option D

Explanation:

• A. $\ln x$
• B. $\ln 2x$
• C. $x^2$
• D. $2x$

Answer: Option C

Explanation:

• A. ৪২
• B. ৪৩
• C. ৪৪
• D. ৪৫

Answer: Option D

Explanation: