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 Recapture3 marks
50 voles are marked and released. Later 20 are caught, of which 5 are marked. Estimate the population.
- 3Standard Form3 marks
Work out (56 x 10^6) / (8 x 10^5). Give your answer in standard form.
- 4Trigonometric and Exponential Graphs2 marks
The curve y = 2^x is drawn. Work out y when x = 5, and write down where the curve crosses the y-axis.
- 5Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 3 : 4. Write y in terms of x.
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