Daily Practice

Higher Plus

6th January 1961

5 questions · 13 marks · Grades 8-9 · 51 question types in this band

1
Probability Equation Questions3 marks
A bag holds 12 counters, r of them red. Two are taken without replacement and P(both red) = 1/11. Work out r.
2
Histograms3 marks
On a histogram the bar for 60 < x <= 70 has a frequency density of 3.5. How many values are in that class?
3
Surds3 marks
Rationalise the denominator of 20/sqrt(2), giving your answer in its simplest form.
4
Trigonometric and Exponential Graphs2 marks
The curve y = cos x° is drawn for 0 <= x <= 360. Write down the value of y when x = 360.
5
Velocity Time Graphs2 marks
A train slows steadily from 15 m/s to rest in 5 seconds. Work out its deceleration.

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