Daily Practice

Higher

30th September 1981

5 questions · 11 marks · Grades 6-7 · 61 question types in this band

1
Probability Trees3 marks
6 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Cumulative Frequency2 marks
Four classes in order have frequencies 6, 7, 6, 9. Write down the cumulative frequency at the end of the third class.
3
Bounds2 marks
A mass is 50 kg, correct to the nearest 10. Write down the lower bound.
4
Trigonometric and Exponential Graphs2 marks
The curve y = 2^x is drawn. Work out y when x = 4, and write down where the curve crosses the y-axis.
5
Speed and Density2 marks
A block has volume 50 cm^3 and density 11 g/cm^3. Work out its mass.

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