Daily Practice

Higher Plus

8th October 1959

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

1
Conditional Probability3 marks
A bag holds 4 red, 7 blue and 5 green counters. Two are taken without replacement. Given neither is green, what is the probability both are red?
2
Histograms3 marks
On a histogram the bar for 30 < x <= 35 has a frequency density of 1.2. How many values are in that class?
3
Surds3 marks
Simplify sqrt(20) + sqrt(45), giving your answer in the form a sqrt(b).
4
Factorising Harder Quadratics3 marks
Solve 12x^2 - 13x + 3 = 0.
5
Velocity Time Graphs2 marks
A train slows steadily from 18 m/s to rest in 8 seconds. Work out its deceleration.

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