Math Quiz III

1. If x is 20% greater than 88, then x equals :

a) 68 b) 70.4 c) 105.6 d) 108.8

2. The perimeter of a square of area 9(Pi^2)/16 equals :

a) 3Pi/4 b) 3Pi^2/4 c) 3 d) 4Pi/3

3. On simplifying, the value of [80 - 6(36+ 9)] / (1/4) equals :

a) 416 b) 224 c) 188 d) 104

4. If 35% of 400 = 20% of x, then x equals :

a) 200 b) 350 c) 700 d) 900

5. The value of (2^3 - 1)(2^3 + 1)(2^6 +1)(2^12 + 1) equals :

a) (2^24 - 1) b) (2^36 - 1) c) (2^48 - 1) d) (2^12 - 1)

6. If x^2 + 9x - 3 = 3x^2 + 2x(4 - x), then x^2 equals :

a) 3 b) 5 c) 7 d) 9

7. If the arithmetic mean of a and b is 110,

and mean of b and c is 100,

then the valu of (a - c) equals :

a) - 220 b) -100 c) 100 d) 220

8. If x + y = 36 and y - x = 14, then xy equals :

a) 175 b) 275 c) 375 d) 475

9. Making S the subject of the formula (R - 3)/28 = (S + 8)/35, S equals ;

a) (5R - 47)/4 b) (4R + 47)/5 c) (5R + 17)/4 d) (4R - 17)/5

10. If x is a positive number and half the square root of x

equals the cube root of x, then x equals :

a) 4 b) 16 c) 32 d) 64

----------Key----------

1. (c) 2. (c) 3. (b) 4. (c) 5. (a)

6. (d) 7. (b) 8. (b) 9. (a) 10. (d)