Daily Practice

Higher

16th August 1990

5 questions · 14 marks · Grades 6-7 · 61 question types in this band

1
The Product Rule for Counting3 marks
A code is 3 letters (A to Z) followed by 2 digits (0 to 9), and repeats are allowed. How many codes are possible?
2
Solving Quadratics3 marks
Solve x^2 + 16x + 64 = 0.
3
Repeated Percentage Change3 marks
A town's population is 36500 and grows by 5% each year. Work out the population after 3 years, to the nearest whole number.
4
Perpendicular Lines and the equation of a tangent2 marks
A line has gradient -5. Work out the gradient of a line perpendicular to it.
5
Conditional Probability3 marks
21 students study Spanish and 12 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.

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