Higher
28th January 1953
- 1Speed and Density2 marks
A block has volume 90 cm^3 and density 3 g/cm^3. Work out its mass.
- 2SOHCAHTOA (Trigonometry)3 marks
A right-angled triangle has a hypotenuse of 9 cm and an angle of 20°. Work out the side opposite that angle, to 1 decimal place.
- 3Probability Trees3 marks
2 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 6, 7, 11, 9. Write down the cumulative frequency at the end of the third class.
- 5Bounds2 marks
A mass is 490 kg, correct to the nearest 10. Write down the lower bound.
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