Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
22nd October 2010
- 1Conditional Probability3 marks
25 students study Spanish and 6 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Capture Recapture2 marks
A capture-recapture estimate is made of the snail population of a hedgerow. State one assumption the method relies on.
- 3Surds2 marks
Write sqrt(20) in the form a sqrt(b), where b is as small as possible.
- 4Inequalities on Graphs3 marks
Does the point (-1, -4) satisfy y > 2x + 5?
- 5Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 3, y = 24. Work out y when x = 4.
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