Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
3rd October 2017
- 1Probability Trees3 marks
7 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 2Capture Recapture3 marks
55 beetles are marked and released. Later 18 are caught, of which 2 are marked. Estimate the population.
- 3Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.6060... as a fraction in its simplest form.
- 4Trigonometric and Exponential Graphs2 marks
The curve y = 4^x is drawn. Work out y when x = 4, 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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