Higher
3rd April 1968
- 1Speed and Density2 marks
A block has volume 35 cm^3 and density 2.5 g/cm^3. Work out its mass.
- 2Vectors3 marks
a is the column vector (-3, 3) and b is (0, 5). Work out 3a - 3b as a column vector.
- 3Probability Trees3 marks
7 of 10 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 12, 4, 3, 11. Write down the cumulative frequency at the end of the third class.
- 5Bounds2 marks
A mass is 51 kg, correct to the nearest whole number. Write down the upper bound.
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