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)

Math Quiz II

1. If 3(x^2 + x) - 7 = x^2 + 2(4 + x^2), then x equals:

a) 5 b) 6 c) 9 d) 15

2. The area of a rectangle is 60 sq cm

and its perimeter is 34 sq cm. Its diagonal is:

a) 13 cm b) 14 cm c) 15 cm d) 16 cm

3. If 8a=9b, then the ratio a/9 : b/8 equals :

a) 64 : 81 b) 8 : 9 c) 1 : 1 d) 9 : 8

4. If angle BAD = angle ADB = 4x, angle ACB = x,
angle DBC = 45 deg, then angle ABC equals :

a) 45 deg b) 60 deg c) 90 deg d) 105 deg

5. A man earns a total of Rs x by working 3 days a week
for w weeks. His daily wage equals Rs :

a) 3xw b) w/3x c) x/3w d) xw/3

6. The value of (1/3 - 1/2) - 1 equals :

a) - 7/6 b) - 5/6 c) - 1/6 d) 7/6

7. The figure shows a square with semicircle ends.

If the diagonal of the square equals 6rt(2),

then the area of the figure is :

a) 16 + 9pi b) 36 + 9 pi c) 36 + 6pi d) 40 + 16pi

8. Rt(6^2 + 8^2 - 19) equals :

a) 7 b) 8 c) 9 d) 10

9. If the arithmetic mean of (x + 3) and (y + 5) is 64,
then the mean of x and y is :

a) 8 b) 9 c) 10 d) 12

10. If the mean of x, y and 16 is 12, then the mean of x and y equals :

a) 8 b) 9 c) 10 d) 12

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

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

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

Math Quiz I

1. If a cube has a total surface area of 96 sq cm, its volume in cubic cm is :
a) 16 b) 36 c) 64 d) 96

2. A copier makes 3 copies every 4 seconds.
How many minutes will it take to make 9000 copies?
a) 60 b) 100 c) 120 d) 200

3. A square of perimeter 24 cm has
semicircles on a pair of opposite sides.
The total area of the figure is:

a) 16 + 9pi b) 36 + 9pi c) 36 + 6pi d) 40 + 16pi

4. In 3 games a team scores 385, 70 and 190.
In the 4th game, the team scores such that
the average score in the 4 games is 220.
Their 4th game score is:
a) 135 b) 155 c) 220 d) 235

5. When x = 0.6, then the value of 3x^2 - 1.8x + 0.3 equals :
a) - 0.3 b) 0 c) 0.3 d) 1.08

6. Over a 3 week period, the price of gold
increased by 25% in the 1st week, decreased
by 20% in the 2nd week and increased by 5%
in the 3rd week. If the price in the
beginning of the 1st week was x,
then the price at the end of the 3rd week equals:
a) 0.95x b) x c) 1.05x d) 1.15x

7. A rectangle is equal in area to a square of side 12 cm.
If the rectangle has a width of 9 cm, the length of the diagonal is :
a) 20 cm b) 22 cm c) 24 cm d) 25 cm

8. The ratio (0.2)^8 : (0.2)^5 equals:
a) 0.0008 b) 0.008 c) 0.08 d) 0.8

9. The ratio (1/3)^2 : (1/3)^4 equals:
a) 9 : 1 b) 3 : 1 c) 1 : 9 d) 1 : 3

10. The difference in areas of 2 squares
whose diagonals are 34 cm and 27 cm equals :
a) 106.75 sq cm b) 213.5 sq cm c) 427 sq cm d) 729 sq cm

----------Answer Key----------
1. (c) 2. (d) 3. (b) 4. (d) 5. (c) 6. (c) 7. (d) 8. (b) 9. (a) 10. (b)