Daily Practice

Higher

5th July 1985

5 questions · 12 marks · Grades 6-7 · 61 question types in this band

1
Conditional Probability3 marks
15 students study Spanish and 10 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Capture Recapture2 marks
A capture-recapture estimate is made of the beetle population of a woodland. State one assumption the method relies on.
3
Surds2 marks
Write sqrt(20) in the form a sqrt(b), where b is as small as possible.
4
Drawing Quadratic Graphs2 marks
For the curve y = x^2 - x - 7, work out y when x = 4.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 3, y = 33. Work out y when x = 4.

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