• A. $-1$
• B. $0$
• C. $1$
• D. $2$

Answer: Option C

Explanation:

• A. $20$
• B. $40$
• C. $60$
• D. $80$

Answer: Option B

Explanation:

• A. 49:70:40
• B. 49:40:70
• C. 40:70:49
• D. 70:49:40

Answer: Option D

Explanation:

• A. 6
• B. 7
• C. 8
• D. 9

Answer: Option B

Explanation:

• A. $a^2+b^2$
• B. $a^2-b^2$
• C. ${(a+b)}^3$
• D. ${(a-b)}^3$

Answer: Option D

Explanation:

• A. $n^2-1$
• B. $n^2$
• C. $n^2+1$
• D. $n^2+2$

Answer: Option B

Explanation:

• A. 1
• B. 2
• C. 3
• D. 4

Answer: Option D

Explanation:

• B. 1
• C. a-b
• D. a+b

Answer: Option B

Explanation:

• A. (6 - a)(4a - 1)
• B. (a - 6)(4a + 1)
• C. (a - b)(4a - 1)
• D. (6 - a)(4a + 1)

Answer: Option D

Explanation:

• A. 4
• B. 3
• C. 2
• D. 1

Answer: Option D

Explanation:

• A. 4
• B. 5
• C. 6
• D. 7

Answer: Option A

Explanation:

• A. $p^2-1$
• B. $p^2$
• C. $p^2+1$
• D. কোনটি নয়

Answer: Option B

Explanation:

• A. $\frac{49}{9}$
• B. $\frac{14}{9}$
• C. $\frac{7}{3}$
• D. $7$

Answer: Option A

Explanation:

• A. 2
• B. 1
• C. -2
• D. -1

Answer: Option B

Explanation:

• A. 25
• B. 29
• C. 28
• D. 27

Answer: Option B

Explanation: