Daily Practice
Higher
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29th June 1988
- 1Speed and Density2 marks
A block has volume 165 cm^3 and density 4 g/cm^3. Work out its mass.
- 2Vectors3 marks
a is the column vector (-1, -1) and b is (6, 0). Work out 4a - 4b as a column vector.
- 3Probability Trees3 marks
3 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Cumulative Frequency2 marks
Four classes in order have frequencies 10, 7, 5, 7. Write down the cumulative frequency at the end of the third class.
- 5Bounds2 marks
A mass is 240 kg, correct to the nearest 10. Write down the lower bound.
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