Higher
19th December 1957
- 1Fractional and Negative Indices3 marks
Work out 25^(3/2).
- 2Quadratic Formula3 marks
Work out the discriminant of 4x^2 + 6x + 9 = 0 and say how many real solutions it has.
- 3Repeated Percentage Change3 marks
A town's population is 19500 and grows by 3% each year. Work out the population after 5 years, to the nearest whole number.
- 4Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 4. The smaller has an area of 3 cm^2. Work out the area of the larger.
- 5Conditional Probability3 marks
16 students study Spanish and 10 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1957, including the monthly compilation PDF.