Daily Practice · Higher Plus

Daily Practice - Higher Plus

13th December 1992

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

1
Conditional Probability3 marks
A bag holds 7 red, 7 blue and 6 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 10 < x <= 20 has a frequency density of 1.2. How many values are in that class?
3
Bounds3 marks
x = 200 and y = 20, each correct to the nearest whole number. Work out the upper bound of x - y.
4
Proof2 marks
In an algebraic proof, how would you write an odd number in terms of an integer n?
5
Velocity Time Graphs2 marks
A train slows steadily from 32 m/s to rest in 10 seconds. Work out its deceleration.

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