Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
- 1Probability Trees3 marks
4 of 7 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 2Capture Recapture2 marks
A capture-recapture estimate is made of the ladybird population of a garden. State one assumption the method relies on.
- 3Fractional and Negative Indices2 marks
Write 6^-2 as a fraction.
- 4Trigonometric and Exponential Graphs2 marks
The curve y = 2^x is drawn. Work out y when x = 1, and write down where the curve crosses the y-axis.
- 5Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 2, y = 10. Work out y when x = 7.
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