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1. If y = x^2 + c is the equation of a curve, does this curve lie completely above the x-axis
a) c > 0
b) (1, 4) is a point on the curve
2. If the average of five different positive numbers is 18, and if the largest number is 40, then the median of the five numbers could be one of the following
I 5
II 15
III 25
The choices had the usual suspects including I & II, II & III, I & III and I, II and III
A combination/prob problem that I got had to do with selecting 2 teachers out of 9 and seeing if the two teachers taught the same subject (eg. 3 eng, 4 math and 2 hist - what is the prob that both are eng teachers).
1) If t, t/4 and t/8 are all positive integers between 1 and 1000 inclusive, how many values could be there for t
(250, 200, 199, 50, 51)
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