Question

2, x, 14 are in Arithmetic progression, then the value of x is :
A. 28
B. 16
C. 7
D. 8
3.
The standard form of quadratic equation is:
A. ax2-bx+c=0
B. ax2+bx+c=0
C. ar2-bx-c=0
D. ax2+bx-c=0
4.
Sin (90-0) is equal to :
A. Cos 0.
B. tan 0.
C. Sec 0.
D. Cot 0.​

Answer 1

Answer:

2. (D) 8

3. (B) ax2+bx+c=0

4. (A) cos 0