Daily Practice
Higher
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13th August 1975
- 1Speed and Density2 marks
A block has volume 195 cm^3 and density 7.5 g/cm^3. Work out its mass.
- 2Vectors3 marks
a is the column vector (-4, -6) and b is (-5, -4). Work out 2a - 3b as a column vector.
- 3Probability Trees3 marks
7 of 9 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 4, 4, 9, 12. Write down the cumulative frequency at the end of the third class.
- 5Fractional and Negative Indices3 marks
Work out 100^(3/2).
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Any date always gives the same five questions, so a sheet can be set again or shared. All of August 1975, including the monthly compilation PDF.