Daily Practice

Higher Plus

10th May 1961

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

1
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 4, y = 256. Work out y when x = 5.
2
The Cosine Rule3 marks
A triangle has sides of 10 cm and 10 cm with an angle of 31° between them. Work out the third side, to 1 decimal place.
3
Conditional Probability3 marks
A bag holds 5 red, 5 blue and 4 green counters. Two are taken without replacement. Given neither is green, what is the probability both are red?
4
Histograms3 marks
On a histogram the bar for 30 < x <= 40 has a frequency density of 1.5. How many values are in that class?
5
Bounds3 marks
A rectangle is 29 cm by 6 cm, each correct to the nearest cm. Work out the upper bound of its area.

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