Daily Practice - Higher
21st November 1991
- 1The Product Rule for Counting3 marks
A code is 3 letters (A to Z) followed by 4 digits (0 to 9), and repeats are allowed. How many codes are possible?
- 2Simultaneous Equations3 marks
4 teas and 3 cakes cost £11.00. 2 teas and 4 cakes cost £8.50. Find the price of a tea.
- 3Repeated Percentage Change3 marks
A town's population is 3000 and grows by 4% each year. Work out the population after 3 years, to the nearest whole number.
- 4SOHCAHTOA (Trigonometry)3 marks
A right-angled triangle has a hypotenuse of 24 cm and an angle of 67°. Work out the side opposite that angle, to 1 decimal place.
- 5Probability 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.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of November 1991, including the monthly compilation PDF.