{(34.82)^2 − (15.18)^2}/19.64

Evaluate :

50

49

25

500

If x−1 and x+1 are factors of x^4+3ax+b, then what is the value of 3a+2b?

4

-2

2

-4

Factorize: 81a^4+375a ,

3a(3a+5)(9a^2+15a-25)

-3a(3a+5)(9a^2−15a+25)

3a(3a-5)(9a^2−15a+25)

3a(3a+5)(9a^2−15a+25)

The positive solutions of the equation ex + fy + g = 0 always lie in,

First quadrant

Second quadrant

Third quadrant

Fourth quadrant

1, -9

-1, 9

-1, -9

1, 9

The gradient of the line y = 4 -2x is:

4

-3

-2

2

The ratio of girls: to boys in a school is 5:7. If there are 525 girls, how many boys are there?

735

375

325

750

The number *u *is rational. Which statement about 6+*u* is true?

6+*u *is irrational

6+*u *is rational

6+*u *can be irrational or rational

None of these