Wednesday, December 16, 2009
1. If ^ + ^ = 0 and ab is not equal to zero, then what is the value of ^2?
2. Col A: The number of ways of forming different groups of 2 kittens each from 8 kittens
Col B: The number of ways of forming different groups of 6 kittens each from 8 kittens
3. Col A: sqrt + sqrt
Col B: sqrt + sqrt
4. Given x is not equal to 0, y is not equal to 0 and xy is not equal to 0.
Col A: 1/
Col B: 1/^3
5. Given a line equation y = ax+b. If x-intercept is 5 and slope is 2, then
Col A: y-intercept
Col B: -10
6. Given a set of numbers: {10, 11, 12, 15, 15, 15, 17, 19, 20, 20}. If a number 15 is included in the series, then which of the following will change?
A. Mean
B. Median
C. Mode
D. Standard deviation
E. None
7. Given total = n p. If is reduced by 20%, then by what percentage, should be increased to balance the total?
9. In a set of five consecutive numbers, if the greatest value is x + 5, then what is the least value?
10. Given two concentric circles. The inner circle is a garden of radius 6m and the outer circle which has a cement path around the garden has a radius 8m. If the width of cement is 0.06, what is the volume of the cement?
11. Given statistics of bike sales in a company. In 1992, there is a loss of $600 and in 1993 there is a profit of $100. If in 1992, 3 million bikes were sold and in 1993, 4 million bikes were sold, then what is the net profit?
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