Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
3rd December 2002
- 1Probability Equation Questions3 marks
The probability of winning a game is 1/5. A player expects 28 wins. How many games did they play?
- 2Histograms3 marks
A histogram has four 10-wide classes from 0, with frequency densities 2, 0.5, 1, 3. Which class contains the median?
- 3Surds3 marks
Expand and simplify (9 + sqrt(7))(9 - sqrt(7)).
- 4The Nth Term of a Quadratic Sequence2 marks
A quadratic sequence starts 3, 7, 13, 21. Work out the second difference, and the coefficient of n^2.
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 36, y = 12. Work out y when x = 9.
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