Daily Practice · Higher

Daily Practice - Higher

24th March 1992

5 questions · 13 marks · Grades 6-7 · 61 question types in this band

1
Probability Trees3 marks
2 of 7 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Capture Recapture3 marks
35 voles are marked and released. Later 70 are caught, of which 7 are marked. Estimate the population.
3
Bounds2 marks
A mass is 160 kg, correct to the nearest 10. Write down the lower bound.
4
Factorising Harder Quadratics3 marks
Factorise 2x^2 - 5x + 2.
5
Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 2 : 5. Write y in terms of x.

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