Daily Practice

Higher Plus

29th July 1977

5 questions · 14 marks · Grades 8-9 · 51 question types in this band

1
Conditional Probability3 marks
A bag holds 11 red and 3 blue counters. Two are taken without replacement. Given the first was red, what is the probability the second is blue?
2
Histograms3 marks
On a histogram the bar for 50 < x <= 60 has a frequency density of 3.5. How many values are in that class?
3
Surds3 marks
Rationalise the denominator of 20/sqrt(5), giving your answer in its simplest form.
4
Algebraic Fractions3 marks
Simplify (x^2 + 4x - 32)/(x + 8).
5
Velocity Time Graphs2 marks
A train slows steadily from 26 m/s to rest in 4 seconds. Work out its deceleration.

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