Daily Practice · Higher Plus

Daily Practice - Higher Plus

2nd December 1993

5 questions · 15 marks · Grades 8-9 · 51 question types in this band

1
Conditional Probability3 marks
A bag holds 6 red and 6 blue counters. Two are taken without replacement. Given the first was red, what is the probability the second is blue?
2
Histograms3 marks
A histogram has four 20-wide classes from 0, with frequency densities 0.5, 2, 1, 3. Which class contains the median?
3
Surds3 marks
Simplify sqrt(32) + sqrt(2), giving your answer in the form a sqrt(b).
4
Transforming Graphs y=f(x)3 marks
The point (-3, 0) lies on y = f(x). Write down its image on y = f(x + 2).
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 16, y = 12. Work out y when x = 25.

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