1 . 3x-y=3,5x+y=21  হলে (x, y) এর মান -

• A. (2,5)
• B. (2,6)
• C. (3,5 )
• D. (3,6)

Answer: Option D

Explanation:

2 . x+y=2,x2+y2=4 হলে

• A. $4$
• B. $8$
• C. $12$
• D. $16$

Answer: Option B

Explanation:

3 . x+y=2

• A. $2$
• B. $14$
• C. $8$
• D. $1$

Answer: Option C

Explanation:

4 . x2+y2=4 x3 + y3

• A. 6
• B. 7
• C. 8
• D. 10

Answer: Option C

Explanation:

5 . x2+y2=4 x3+y3

• A. 4
• B. 8
• C. 12
• D. 16

Answer: Option B

Explanation:

6 . x+y=2

• A. 4
• B.
• C.
• D.

Answer: Option A

Explanation:

7 . If w+x=-4, x+y=25 and y+w=15, the the average of w, x,y is:

• A. 3
• B. 4
• C. 5
• D. 6

Answer: Option D

Explanation: