Higher
16th September 1970
- 1Probability Trees3 marks
8 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 2Cumulative Frequency2 marks
Four classes in order have frequencies 4, 6, 3, 9. Write down the cumulative frequency at the end of the third class.
- 3The Product Rule for Counting2 marks
A meal deal has 9 mains, 7 sides and 2 drinks. How many different meals are possible?
- 4Trigonometric and Exponential Graphs2 marks
The curve y = 2^x is drawn. Work out y when x = 3, and write down where the curve crosses the y-axis.
- 5Speed and Density2 marks
A block has volume 165 cm^3 and density 4 g/cm^3. Work out its mass.
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