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Math 005

1: If the radius of a circle is multiplied by 2, its area increases by how many times?

9
5
2
7
12

2: When 13 is divided by the positive integer Y, the remainder is Y - 2. Which of the following could be the value of Y?

Three
Five
Six
Nine
Four

3: In a batch of 230 remote-controlled airplanes tested at a factory, 3 were found to be defective. At this rate, how many defective remote-controlled airplanes would be found in a batch of 19,000?

37
248
433
311
901

4: In the xy-plane, the points with coordinates (0,-5) and (6,-2) lie on line A. Line B contains the point with coordinates (-5,0) and is perpendicular to line A. What is the x-coordinate of the point where lines A and B intersect?

-2
-6
-7
-5
-1

5: Let's assume that 25% U.S. households own two pets, and 10% of U.S. households own no pets. Let's also assume, 45% of U.S. households have at least one computer, and 75% of U.S. households have a washing machine. Given this, the ratio of households with a washing machine to households with two pets is ______.

4:1
5:1
3:1
1:3
2:1

6: There are Y yards of carpet available to carpet a new house. After X yards have been used, in terms of Y and X, what percent of the carpet has not been used?

(Y/(100*X)) %
((100*X)/Y) %
((100*(Y-X))/Y) %
((100*Y)/X) %
(Y/(100*(Y-X))) %

7: If W = R to the Xth power, where X is a prime number, then W must be ______.

a positive number
greater than 1
a prime number
a multiple of x
an even number

8: If 2Y + 10 = 12, what is the value of 3Y - 1?

-1
6
3
2
8

9: What is the remainder if QR is divided by 6, assuming that if the positive integer R is divided by 6, the remainder is 2, and if the positive integer Q is divided by 6, the remainder is 3?

4
1
6
2
0

10: The dimensions of a baby shoebox are 3 by 4 by 5 centimeters. The length of each edge of this baby shoebox is increased by 20%. Now what is the surface area, in square centimeters, of this new shoebox?

16.5
135.4
32
102.3
42.2

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