Daily Practice
Higher
- 1Probability Trees3 marks
3 of 6 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 snail population of a hedgerow. State one assumption the method relies on.
- 3Standard Form3 marks
Work out (42 x 10^6) / (6 x 10^2). Give your answer in standard form.
- 4Simultaneous Equations3 marks
5 teas and 4 cakes cost £19.10. 2 teas and 3 cakes cost £11.70. Find the price of a tea.
- 5Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 5, y = 15. Work out y when x = 4.
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